{"title":"Auto Top Off","description":null,"products":[{"product_id":"icecap-freshwater-ato-reservoir-5gal","title":"IceCap Freshwater ATO Reservoir – 5 Gallon","description":"\u003ch2\u003eIceCap Freshwater ATO Reservoir – 5 Gallon (IC-FCT-5G)\u003c\/h2\u003e\n\u003cp\u003eKeep your ATO stack clean and your water supply safe with this sealed freshwater reservoir. It’s dust-proof, evaporation-resistant, and built for easy access, making water top-offs a breeze. 💧🔒\u003c\/p\u003e\n\u003ch3\u003eFeatures \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSealed acrylic body protects top-off water from dust and evaporation\u003c\/li\u003e\n\u003cli\u003eIncludes 1\/4″ float valve for simple RO refill integration*\u003c\/li\u003e\n\u003cli\u003eTwo 1\/4″ quick-connect fittings—great for ATO lines or kalkwasser dosing\u003c\/li\u003e\n\u003cli\u003eMicro-dosing line—perfect for HYDROS Maven or other auto-dosing gear\u003c\/li\u003e\n\u003cli\u003eLarge service opening with lid—easy to refill and clean\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSKU: IC-FCT-5G\u003c\/li\u003e\n\u003cli\u003eNominal Capacity: 5 US gallons\u003c\/li\u003e\n\u003cli\u003eDimensions (L × W × H): 13.8 × 6 × 15 in\u003c\/li\u003e\n\u003cli\u003eDurable acrylic construction for long-term clarity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat’s Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e5-Gallon reservoir with lid\u003c\/li\u003e\n\u003cli\u003eInstalled 1\/4″ float valve\u003c\/li\u003e\n\u003cli\u003eTwo 1\/4″ quick-connect fittings\u003c\/li\u003e\n\u003cli\u003eMicro-dosing port\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"text-align: center;\"\u003eMore Information\u003c\/h3\u003e\n\u003ctable style=\"margin: 0 auto;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eItem Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIceCap Freshwater ATO Reservoir – 5 Gallon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIceCap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer SKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIC-FCT-5G\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApproximate Price**\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e$120.99 (in USD – CoralVue listing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e13.8 × 6 × 15 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eShop Other Sizes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/icecap-freshwater-ato-reservoir-10gal\" rel=\"noopener\" target=\"_blank\"\u003eIceCap Freshwater Reservoir – 10 Gallon\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IceCap","offers":[{"title":"Default Title","offer_id":47488218562779,"sku":"IC-FCT-5G","price":120.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/ic_5gal_freshwaterreservoir.jpg?v=1755981414"},{"product_id":"icecap-freshwater-ato-reservoir-10gal","title":"IceCap Freshwater ATO Reservoir – 10 Gallon (IC-FCT-10G)","description":"\u003ch2\u003eIceCap Freshwater ATO Reservoir – 10 Gallon (IC-FCT-10G)\u003c\/h2\u003e\n\u003cp\u003eEliminate dust and evaporation from your top-off water source with this sealed reservoir. Featuring easy refill access and connections for dosing and ATO lines, it’s a reef keeper’s trusted companion to maintain stability. 💧🔒\u003c\/p\u003e\n\u003ch3\u003eFeatures \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSealed design protects water quality from dust and evaporation\u003c\/li\u003e\n\u003cli\u003e1\/4″ float valve included—for RO line integration (monitor during refill*)\u003c\/li\u003e\n\u003cli\u003eDual 1\/4″ quick-connect ports—ideal for ATO or kalk dosing\u003c\/li\u003e\n\u003cli\u003eMicro-dosing line accommodates HYDROS or similar systems\u003c\/li\u003e\n\u003cli\u003eWide access lid for convenient refills and cleaning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSKU: IC-FCT-10G\u003c\/li\u003e\n\u003cli\u003eCapacity: 10 US gallons\u003c\/li\u003e\n\u003cli\u003eDimensions (L × W × H): 15.7 × 9.8 × 15 in\u003c\/li\u003e\n\u003cli\u003eMade from durable, clear acrylic\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat’s Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e10-Gallon acrylic reservoir with lid\u003c\/li\u003e\n\u003cli\u003e1\/4″ float valve\u003c\/li\u003e\n\u003cli\u003eTwo quick-connect fittings\u003c\/li\u003e\n\u003cli\u003eMicro-dosing line\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"text-align: center;\"\u003eMore Information\u003c\/h3\u003e\n\u003ctable style=\"margin: 0 auto;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eItem Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIceCap Freshwater ATO Reservoir – 10 Gallon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIceCap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer SKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIC-FCT-10G\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApproximate Price**\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e$148.49 (USD – CoralVue listing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15.7 × 9.8 × 15 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eShop Other Sizes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/icecap-freshwater-ato-reservoir-5gal\" rel=\"noopener\" target=\"_blank\"\u003eIceCap Freshwater Reservoir – 5 Gallon\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IceCap","offers":[{"title":"Default Title","offer_id":47488221937883,"sku":"IC-FCT-10G","price":148.49,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/ic_10gal_freshwaterreservoir.jpg?v=1755981535"},{"product_id":"icecap-ato-ez-auto-top-off-system","title":"IceCap IC-ATOEZ | ATO EZ Automatic Top-Off System | Saltwater \u0026 Freshwater","description":"\u003cp\u003eSay goodbye to daily top-offs and hello to peace of mind! The IceCap ATO EZ uses \u003cstrong\u003ethree optical sensors\u003c\/strong\u003e for precision water level control and built-in fail-safes. With no moving parts, a whisper-quiet pump, and everything you need in the box, this ATO makes stability simple. 💧🐠✨\u003c\/p\u003e\n\u003ch3\u003eWhy You’ll Love It ❤️\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e🌊 \u003cstrong\u003eTriple optical sensors\u003c\/strong\u003e – low, normal, and safety levels for unmatched reliability\u003c\/li\u003e\n\u003cli\u003e🔒 \u003cstrong\u003eFail-safe shutoff\u003c\/strong\u003e – prevents overfilling and protects your aquarium\u003c\/li\u003e\n\u003cli\u003e🔇 \u003cstrong\u003eQuiet brushless pump\u003c\/strong\u003e – 50 GPH flow, 6 ft max head, built to last 30,000+ hours\u003c\/li\u003e\n\u003cli\u003e⚡ \u003cstrong\u003ePlug-and-play design\u003c\/strong\u003e – set up in minutes with magnetic mount and included hardware\u003c\/li\u003e\n\u003cli\u003e🛠️ \u003cstrong\u003eComplete kit\u003c\/strong\u003e – pump, tubing, holder, anti-siphon valve, power supply, and sensor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specs 📊\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSKU: IC-ATOEZ\u003c\/li\u003e\n\u003cli\u003eFlow Rate: 50 GPH\u003c\/li\u003e\n\u003cli\u003ePower: 5 W\u003c\/li\u003e\n\u003cli\u003ePump Dimensions: 1.5″ × 1.5″ × 1.5″\u003c\/li\u003e\n\u003cli\u003eTubing: 6.5 ft (ID 6.5 mm \/ OD 8 mm)\u003c\/li\u003e\n\u003cli\u003eMagnet Mount: up to ½″ glass\/acrylic\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat’s Included 📦\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMagnet-mounted optical sensor block (3 sensors)\u003c\/li\u003e\n\u003cli\u003eBrushless refill pump\u003c\/li\u003e\n\u003cli\u003ePower adapter\u003c\/li\u003e\n\u003cli\u003e6.5 ft tubing \u0026amp; tubing holder\u003c\/li\u003e\n\u003cli\u003eAnti-siphon valve\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"text-align: center;\"\u003eMore Information ℹ️\u003c\/h3\u003e\n\u003ctable style=\"margin: 0 auto;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eItem Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIceCap ATO EZ Automatic Top-Off System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIceCap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer SKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIC-ATOEZ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePump Flow\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50 GPH (6 ft head max)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 year limited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"IceCap","offers":[{"title":"Default Title","offer_id":47488224002267,"sku":"IC-ATOEZ","price":104.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/ic_atoez_graphic.jpg?v=1755982134"},{"product_id":"neptune-systems-212317-atk-v2-auto-top-off-kit","title":"Neptune Systems ATK V2 Auto Top Off Kit","description":"\n\u003cp\u003eKeep your tank topped off automatically. The Neptune Systems ATK V2 replaces water lost to evaporation to hold a rock-steady water level, preventing the salinity swings that stress fish and corals. It runs completely standalone right out of the box, and it plugs straight into an Apex controller when you want app monitoring and alerts. Explore more \u003ca href=\"\/collections\/salt-water\"\u003ereef equipment and controllers\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3 style=\"margin:16px 0 6px;font-size:1.08em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eReliable, Redundant Level Control\u003c\/h3\u003e\n\u003cp\u003eThe ATK V2 uses two optical sensors with no moving parts to read your water level, backed by a mechanical float valve as a fail-safe. Its IQ-Fill run-time intelligence learns how long a normal top-off should take and shuts the pump off if something is out of range, so it will not overfill your tank. Audible alarms let you know the moment attention is needed.\u003c\/p\u003e\n\u003ch3 style=\"margin:16px 0 6px;font-size:1.08em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eStandalone or Apex-Connected\u003c\/h3\u003e\n\u003cp\u003eUse it on its own with no controller required, or connect the included FMM module to an Apex system to monitor levels, log usage, and get alerts through Apex Fusion and Mobius. Either way, the included 24V DC PMUP pump delivers quiet, dependable top-off from your reservoir.\u003c\/p\u003e\n\u003ch3 style=\"margin:16px 0 6px;font-size:1.08em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"margin:4px 0 4px 18px;padding:0;line-height:1.5;\"\u003e\n\u003cli\u003eAutomatic top-off that prevents salinity and water-level fluctuations\u003c\/li\u003e\n\u003cli\u003eTwo optical sensors with no moving parts for precise readings\u003c\/li\u003e\n\u003cli\u003eMechanical float valve fail-safe plus audible alarms\u003c\/li\u003e\n\u003cli\u003eIQ-Fill run-time intelligence guards against overfilling\u003c\/li\u003e\n\u003cli\u003eIncluded 24V DC PMUP pump for quiet, plug-and-play operation\u003c\/li\u003e\n\u003cli\u003eWorks fully standalone, or connect to an Apex controller via the included FMM module\u003c\/li\u003e\n\u003cli\u003eComes with mounting hardware and tubing for a quick install\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:16px 0 6px;font-size:1.08em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eWhat's Included\u003c\/h3\u003e\n\u003cul style=\"margin:4px 0 4px 18px;padding:0;line-height:1.5;\"\u003e\n\u003cli\u003eATK V2 sensor holder with dual optical sensors and float valve\u003c\/li\u003e\n\u003cli\u003e24V DC PMUP pump\u003c\/li\u003e\n\u003cli\u003eFMM (Fluid Monitoring Module)\u003c\/li\u003e\n\u003cli\u003eMounting brackets and hardware\u003c\/li\u003e\n\u003cli\u003eTubing and power supply\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:16px 0 6px;font-size:1.08em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;max-width:520px;font-size:0.95em;margin:6px 0;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;width:40%;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eNeptune Systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eAutomatic Top-Off (ATO) kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003ePump\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e24V DC PMUP, up to 100 GPH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e17 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eSensors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eTwo optical (no moving parts) plus mechanical float valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eControl\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eStandalone, or Apex via included FMM module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eCord \/ tubing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e6 ft power cord, 13 ft tubing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eUse in\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eSaltwater and freshwater aquariums\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong\u003eItem\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e212317\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin:16px 0 6px;font-size:1.08em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul style=\"margin:4px 0 4px 18px;padding:0;line-height:1.5;\"\u003e\n\u003cli\u003eA Neptune Apex controller to unlock monitoring, logging, and alerts\u003c\/li\u003e\n\u003cli\u003eAn RO\/DI or top-off reservoir for a clean freshwater source\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/salt-water\"\u003eMore reef and marine equipment\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:16px 0 6px;font-size:1.08em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp style=\"margin:6px 0;\"\u003e\u003cstrong\u003eDo I need an Apex controller to use it?\u003c\/strong\u003e\u003cbr\u003eNo. The ATK V2 runs completely standalone. An Apex just adds remote monitoring, logging, and alerts through the included FMM module.\u003c\/p\u003e\n\u003cp style=\"margin:6px 0;\"\u003e\u003cstrong\u003eHow does it prevent overfilling?\u003c\/strong\u003e\u003cbr\u003eIt combines dual optical sensors, a mechanical float valve fail-safe, and IQ-Fill run-time intelligence that shuts the pump off if a top-off runs longer than normal.\u003c\/p\u003e\n\u003cp style=\"margin:6px 0;\"\u003e\u003cstrong\u003eDoes it come with a pump?\u003c\/strong\u003e\u003cbr\u003eYes. A 24V DC PMUP pump, sensors, FMM module, mounting hardware, and tubing are all included.\u003c\/p\u003e\n\u003cp style=\"margin:6px 0;\"\u003e\u003cstrong\u003eCan I use it on a freshwater tank?\u003c\/strong\u003e\u003cbr\u003eYes. While it is most popular on reef tanks, it works on freshwater aquariums too.\u003c\/p\u003e","brand":"Neptune Systems","offers":[{"title":"Default Title","offer_id":47719433896155,"sku":"212317","price":229.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/atk_hero_ncp_5737_new-pmup.webp?v=1760390606"},{"product_id":"xpaqua-duetto2-ato","title":"XP Aqua Duetto2 ATO","description":"\u003cp\u003e\u003cstrong\u003eHands-off, rock-steady water level.\u003c\/strong\u003e The XP Aqua Duetto 2 is the world's smallest dual-sensor auto top-off, a complete plug-and-play system that automatically replaces evaporated water to keep your water level and salinity stable. Its proprietary dual-optical sensor packs a primary and a backup sensor into one tiny housing, working with intelligent QST programming to prevent overfilling. Everything you need is included, and a magnetic coupling makes mounting the sensor take seconds. For AIO and nano tanks without a sump, see the \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/xpaqua-sumpless-ato2\"\u003eSumpless ATO2\u003c\/a\u003e.\u003c\/p\u003e\u003ch3 style=\"margin:16px 0 6px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eWorld's smallest dual-optical sensor: a primary level sensor plus a secondary backup\u003c\/li\u003e\n\u003cli\u003eIntelligent QST programming with two layers of overfill protection\u003c\/li\u003e\n\u003cli\u003eComplete kit with a quiet 74 gph DC pump, tubing, and mounting hardware\u003c\/li\u003e\n\u003cli\u003eMagnetic coupling for tool-free sensor mounting on glass up to 1\/2 inch\u003c\/li\u003e\n\u003cli\u003ePlug-and-play, with no programming or calibration required\u003c\/li\u003e\n\u003cli\u003eWorks on both freshwater and saltwater aquariums\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3 style=\"margin:16px 0 6px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eSpecifications\u003c\/h3\u003e\u003ctable style=\"border-collapse:collapse;margin:6px 0 4px;font-size:0.95em;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;background:#f5f5f5;font-weight:600;width:40%;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eXP Aqua (AutoAqua)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;background:#f5f5f5;font-weight:600;width:40%;\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eDual-sensor auto top-off (ATO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;background:#f5f5f5;font-weight:600;width:40%;\"\u003eSensor\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eDual optical, primary plus backup\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;background:#f5f5f5;font-weight:600;width:40%;\"\u003ePump\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e74 gph (280 L\/h) DC, 8.2 ft head, 4.8 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;background:#f5f5f5;font-weight:600;width:40%;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eMagnetic, glass up to 1\/2 in (12.7 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;background:#f5f5f5;font-weight:600;width:40%;\"\u003ePower\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e100 to 240 VAC adapter, 6 ft cables\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;background:#f5f5f5;font-weight:600;width:40%;\"\u003eBest for\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eFreshwater and saltwater aquariums\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;background:#f5f5f5;font-weight:600;width:40%;\"\u003eMade in\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eTaiwan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3 style=\"margin:16px 0 6px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eSetup\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMount the sensor at your target water level using the magnetic coupling\u003c\/li\u003e\n\u003cli\u003ePlace the pump in your RO\/DI top-off reservoir and run the tubing to the tank\u003c\/li\u003e\n\u003cli\u003ePlug it in; it tops off automatically when the level drops and stops at the set point\u003c\/li\u003e\n\u003cli\u003eUse RO\/DI or fresh top-off water only, never saltwater, since an ATO replaces evaporation and not salt\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3 style=\"margin:16px 0 6px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003ePair It With\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/xpaqua-sumpless-ato2\"\u003eXP Aqua Sumpless ATO2\u003c\/a\u003e for AIO and nano tanks without a sump\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/autoaqua-smart-ato-nano-g2-optical-auto-top-off-system\"\u003eAutoAqua Smart ATO Nano G2\u003c\/a\u003e for a simpler single-sensor option\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/autoaqua-titanium-s2-inline-tds-meter-rodi-monitor\"\u003eAutoAqua Inline TDS Meter\u003c\/a\u003e to keep an eye on your RO\/DI water quality\u003c\/li\u003e\n\u003cli\u003eBrowse more \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/maintenance-water-care\"\u003ewater care\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3 style=\"margin:16px 0 6px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does an auto top-off do?\u003c\/strong\u003e\u003cbr\u003eIt automatically replaces water lost to evaporation, so your water level and salinity stay stable and you do not have to top off by hand.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFreshwater or saltwater?\u003c\/strong\u003e\u003cbr\u003eBoth. Stable water level benefits any tank, and it is especially valuable on reef tanks where evaporation shifts salinity.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I fill the reservoir with fresh or salt water?\u003c\/strong\u003e\u003cbr\u003eFresh RO\/DI water only. Evaporation leaves salt behind, so topping off with saltwater would steadily raise your salinity.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat happens if a sensor fails?\u003c\/strong\u003e\u003cbr\u003eThe dual-optical sensor and QST programming provide two layers of protection: the backup sensor shuts the pump off if the primary has an issue, preventing an overfill.\u003c\/p\u003e","brand":"AutoAqua","offers":[{"title":"Default Title","offer_id":48257212678363,"sku":"21240","price":167.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_a4499ad1-1f22-490d-8128-7001cdacb3dc.png?v=1770993123"},{"product_id":"xpaqua-sumpless-ato2","title":"XP Aqua Sumpless ATO2","description":"\u003cp\u003e\u003cstrong\u003eAuto top-off built for tanks without a sump.\u003c\/strong\u003e The XP Aqua Sumpless ATO 2 is the first auto top-off designed specifically for aquariums with no sump. It pairs the same reliable dual-optical sensor and DC pump as the Duetto with a Flexi Overflow Box that mounts on the glass, so AIO and nano keepers get hands-off, precise top-off without drilling or a sump. Have a sump or open rim instead? See the \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/xpaqua-duetto2-ato\"\u003eDuetto2 ATO\u003c\/a\u003e.\u003c\/p\u003e\u003ch3 style=\"margin:16px 0 6px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eThe first and only ATO built for sumpless AIO and nano aquariums\u003c\/li\u003e\n\u003cli\u003eDual-optical sensor: a primary level sensor plus a secondary backup for overfill protection\u003c\/li\u003e\n\u003cli\u003eIncludes a Flexi Overflow Box with a magnetic mount for glass up to 1\/2 inch\u003c\/li\u003e\n\u003cli\u003eComplete kit with a quiet 74 gph DC pump, tubing, and power adapter\u003c\/li\u003e\n\u003cli\u003ePrecise, plug-and-play water level control with no programming needed\u003c\/li\u003e\n\u003cli\u003eWorks on both freshwater and saltwater aquariums\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3 style=\"margin:16px 0 6px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eSpecifications\u003c\/h3\u003e\u003ctable style=\"border-collapse:collapse;margin:6px 0 4px;font-size:0.95em;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;background:#f5f5f5;font-weight:600;width:40%;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eXP Aqua (AutoAqua)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;background:#f5f5f5;font-weight:600;width:40%;\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eSumpless auto top-off (ATO) with overflow box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;background:#f5f5f5;font-weight:600;width:40%;\"\u003eSensor\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eDual optical, primary plus backup\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;background:#f5f5f5;font-weight:600;width:40%;\"\u003ePump\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e74 gph (280 L\/h) DC, 8.2 ft head, 4.8 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;background:#f5f5f5;font-weight:600;width:40%;\"\u003eOverflow box\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e3.9 x 2.2 x 6.3 in, magnetic, glass up to 1\/2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;background:#f5f5f5;font-weight:600;width:40%;\"\u003ePower\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e100 to 240 VAC adapter, 6 ft cables\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;background:#f5f5f5;font-weight:600;width:40%;\"\u003eBest for\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eFreshwater and saltwater aquariums\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;background:#f5f5f5;font-weight:600;width:40%;\"\u003eMade in\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eTaiwan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3 style=\"margin:16px 0 6px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eSetup\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMount the Flexi Overflow Box on the tank rim with the magnetic bracket\u003c\/li\u003e\n\u003cli\u003eSet the sensor to your target level and place the pump in your RO\/DI reservoir\u003c\/li\u003e\n\u003cli\u003ePlug it in; it tops off automatically and the backup sensor prevents overfilling\u003c\/li\u003e\n\u003cli\u003eUse RO\/DI or fresh top-off water only, never saltwater\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3 style=\"margin:16px 0 6px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003ePair It With\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/xpaqua-duetto2-ato\"\u003eXP Aqua Duetto2 ATO\u003c\/a\u003e for tanks with a sump or open rim\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/autoaqua-smart-ato-nano-g2-optical-auto-top-off-system\"\u003eAutoAqua Smart ATO Nano G2\u003c\/a\u003e for a simpler single-sensor option\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/autoaqua-titanium-s2-inline-tds-meter-rodi-monitor\"\u003eAutoAqua Inline TDS Meter\u003c\/a\u003e to monitor your RO\/DI water quality\u003c\/li\u003e\n\u003cli\u003eBrowse more \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/maintenance-water-care\"\u003ewater care\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3 style=\"margin:16px 0 6px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhy is it called sumpless?\u003c\/strong\u003e\u003cbr\u003eIt is built for AIO and nano tanks that have no sump or overflow. The included Flexi Overflow Box does the job of an overflow so the system can top off cleanly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFreshwater or saltwater?\u003c\/strong\u003e\u003cbr\u003eBoth. It keeps the water level and salinity steady on any tank, and is especially handy on nano reefs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I use fresh or salt water in the reservoir?\u003c\/strong\u003e\u003cbr\u003eFresh RO\/DI water only. Evaporation leaves salt behind, so topping off with saltwater would raise your salinity over time.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is it different from the Duetto2?\u003c\/strong\u003e\u003cbr\u003eThe Sumpless ATO2 adds the Flexi Overflow Box for tanks without a sump. The \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/xpaqua-duetto2-ato\"\u003eDuetto2\u003c\/a\u003e mounts its sensor directly and suits tanks that already have a sump or open access.\u003c\/p\u003e","brand":"AutoAqua","offers":[{"title":"Default Title","offer_id":48257216610523,"sku":"21241","price":203.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_1b71a748-814a-4c0c-9dca-11f0036f9fc9.png?v=1770993217"},{"product_id":"autoaqua-smart-ato-nano-g2-optical-auto-top-off-system","title":"AutoAqua Smart ATO Nano G2","description":"\u003cdiv style=\"background:#E0F7FA;border-left:4px solid #006064;padding:10px 14px;margin:0 0 14px;font-size:0.95em;\"\u003e\u003cstrong\u003eIn-store pickup only.\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp\u003eThe \u003cstrong\u003eAutoAqua Smart ATO Nano G2\u003c\/strong\u003e is a plug-and-play auto top-off system built for nano reefs, AIO tanks, and small saltwater setups. The G2 generation uses a contactless optical sensor instead of a float, so there is nothing to stick, jam, or clog with salt creep. Browse our full lineup of \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/salt-water\"\u003esaltwater equipment\u003c\/a\u003e and pair it with the right reservoir below.\u003c\/p\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eWhy Reefers Trust Smart ATO Nano\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical, not float-based.\u003c\/strong\u003e An infrared sensor reads water level through the glass of the sensor body. No moving parts means no stuck floats and no salt-creep failures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in safety logic.\u003c\/strong\u003e A 60-second continuous-run lockout shuts the pump off and sounds an alarm if it thinks the sensor is failing. Protects your livestock from a flood or a salinity crash.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-water alarm.\u003c\/strong\u003e Audible beep when the RO\/DI reservoir runs dry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug and play.\u003c\/strong\u003e Pump, sensor, controller, and wiring all in the box. No soldering, no DIY.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnetic mount.\u003c\/strong\u003e Sensor attaches with a slim neodymium magnet, no clamps to drill or zip-tie.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eHow It Works\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eMount the optical sensor on the sump or display wall at the desired water line.\u003c\/li\u003e\n\u003cli\u003eDrop the pump in your RO\/DI reservoir.\u003c\/li\u003e\n\u003cli\u003eRun the dosing line back to the tank or sump.\u003c\/li\u003e\n\u003cli\u003ePlug in. The sensor watches the water line and triggers the pump when evaporation drops it below the set point.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;max-width:520px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eAutoAqua\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eSmart ATO Nano G2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eSensor type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eContactless optical infrared\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eMagnetic (included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003ePump\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eSubmersible 12V DC, included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eSafety features\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e60-second runtime lockout, low-water alarm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eBest for\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eNano and small reef tanks (up to ~75 gal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eTank type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eSaltwater \u0026amp; freshwater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003ePickup\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eIn-store pickup only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/icecap-freshwater-ato-reservoir-5gal\"\u003eIceCap ATO Reservoir 5 Gallon\u003c\/a\u003e — compact reservoir for nano setups\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/icecap-freshwater-ato-reservoir-10gal\"\u003eIceCap ATO Reservoir 10 Gallon\u003c\/a\u003e — longer runtime between refills\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/icecap-4stage-rodi-75gpd\"\u003eIceCap 4-Stage RO\/DI 75 GPD\u003c\/a\u003e — make your own top-off water\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/autoaqua-titanium-s2-inline-tds-meter-rodi-monitor\"\u003eAutoAqua Titanium S2 Inline TDS Meter\u003c\/a\u003e — keep an eye on your RO\/DI output\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWill it work in a freshwater tank?\u003c\/strong\u003e\u003cbr\u003eYes. The optical sensor reads water level the same way regardless of salinity, so freshwater planted and shrimp tanks work just as well as reefs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow big a reservoir should I run?\u003c\/strong\u003e\u003cbr\u003eFor most nano reefs (10 to 40 gallons), a 5-gallon reservoir lasts 1 to 2 weeks. Larger tanks or warmer rooms go through more water, so a 10-gallon reservoir is a better fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat happens if the pump runs too long?\u003c\/strong\u003e\u003cbr\u003eThe controller cuts power after 60 seconds of continuous run and triggers an audible alarm, so a stuck-on pump cannot flood your tank.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use it with a Kalkwasser reactor or two-part dosing?\u003c\/strong\u003e\u003cbr\u003eThe pump can feed a Kalk reactor inline, just keep the runtime modest. For true Kalk drip control, a dedicated Kalk doser plus this ATO works well together.\u003c\/p\u003e","brand":"AutoAqua","offers":[{"title":"Default Title","offer_id":48324955963611,"sku":"21247","price":131.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_c2b36b92-0188-4955-964c-458422b4b4d1.png?v=1772719650"},{"product_id":"simplicity-easy-fill-ato-reservoir","title":"Simplicity Easy-Fill ATO Reservoir","description":"\u003cp\u003eThe \u003cstrong\u003eSimplicity Easy-Fill ATO Reservoir\u003c\/strong\u003e gives your auto top-off system a clean, sealed supply of fresh water so your aquarium's water level and salinity stay stable between refills. A patent-pending wide-mouth lid folds open into a built-in funnel with an integrated splash guard, letting you pour top-off water in from the front of the cabinet without pulling the reservoir out or making a mess. Choose the \u003cstrong\u003e5 Gallon\u003c\/strong\u003e for nano and mid-size tanks or the \u003cstrong\u003e10 Gallon\u003c\/strong\u003e for larger systems and longer intervals between fills. Browse more \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/salt-water\"\u003esaltwater\u003c\/a\u003e and \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/fresh-water\"\u003efreshwater\u003c\/a\u003e gear.\u003c\/p\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eWhy You'll Like It\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFront-fill funnel lid:\u003c\/strong\u003e the removable wide-mouth lid converts into a funnel, so you refill from the front, ideal for tight in-cabinet spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated splash guard:\u003c\/strong\u003e keeps refills clean and spill-free.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSealed against evaporation and dust:\u003c\/strong\u003e protects your top-off water from contaminants and keeps salinity consistent.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal fit:\u003c\/strong\u003e works with any auto top-off system, float switch, or optical sensor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCabinet-friendly footprint:\u003c\/strong\u003e engineered to slide into standard aquarium stands.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSee-through water level:\u003c\/strong\u003e durable black base with a clear front panel so you can check your reserve at a glance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eHow It Works\u003c\/h3\u003e\n\u003cp\u003eFill the reservoir with RO\/DI or top-off water, drop in your ATO system's pump and float sensor, and the reservoir feeds fresh water into your sump or tank as it evaporates. The wide-mouth funnel lid means topping the reservoir back up takes seconds, with no lifting or siphoning required.\u003c\/p\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eChoose Your Size\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;font-size:0.95em;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003cth style=\"border:1px solid #ccc;padding:6px 10px;text-align:left;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:6px 10px;text-align:left;\"\u003e5 Gallon (SIM6001)\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:6px 10px;text-align:left;\"\u003e10 Gallon (SIM6003)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px 10px;\"\u003e\u003cstrong\u003eCapacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px 10px;\"\u003e5 gallons (19 L)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px 10px;\"\u003e10 gallons (38 L)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px 10px;\"\u003e\u003cstrong\u003eFootprint (L x W x H)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px 10px;\"\u003e6.0 x 16.0 x 15.25 in\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px 10px;\"\u003e8.0 x 16.0 x 22.0 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px 10px;\"\u003e\u003cstrong\u003eClearance to open lid\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px 10px;\"\u003e20.0 in\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px 10px;\"\u003e26.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px 10px;\"\u003e\u003cstrong\u003eFunnel lid opening\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px 10px;\"\u003e4.75 in wide\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px 10px;\"\u003e6.75 in wide\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px 10px;\"\u003e\u003cstrong\u003eWeight (empty)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px 10px;\"\u003e8.3 lb\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px 10px;\"\u003e12.4 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px 10px;\"\u003e\u003cstrong\u003eBest for\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px 10px;\"\u003eNano to mid-size tanks\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:6px 10px;\"\u003eLarger systems, longer intervals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eWhich Size Is Right for You?\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e5 Gallon\u003c\/strong\u003e suits nano and mid-size reef or freshwater tanks and fits most compact stands, needing about 20 inches of vertical clearance to open the lid. The \u003cstrong\u003e10 Gallon\u003c\/strong\u003e holds twice the water for larger displays or setups with higher evaporation, stretching the time between refills. Make sure your cabinet has at least 26.5 inches of clearance so the lid can swing open.\u003c\/p\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Simplicity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Auto top-off water reservoir\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 5 gallons (19 L) or 10 gallons (38 L)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Durable molded plastic, black base with clear front panel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLid:\u003c\/strong\u003e Removable wide-mouth funnel lid with integrated splash guard (patent pending)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Any auto top-off controller, pump, float switch, or optical sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater type:\u003c\/strong\u003e Freshwater and saltwater \/ reef aquariums\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/salt-water\"\u003eAuto top-off controllers and pumps\u003c\/a\u003e to automate your refills\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/simplicity-dc-return-pump\"\u003eSimplicity DC Return Pump\u003c\/a\u003e for your sump\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/maintenance-water-care\"\u003eWater care and maintenance supplies\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this come with an ATO pump or sensor?\u003c\/strong\u003e No. The reservoir is the water container. It is built to work with any auto top-off system, so you can add or reuse your preferred controller, pump, and float or optical sensor.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use it on a freshwater tank?\u003c\/strong\u003e Yes. It works for both freshwater and saltwater. For reef and saltwater tanks, fill it with RO\/DI water to keep salinity stable as water evaporates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy the funnel lid?\u003c\/strong\u003e The wide-mouth lid folds open into a funnel with a splash guard so you can refill the reservoir from the front of your cabinet without removing it, a real help in tight aquarium stands.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it fit in my stand?\u003c\/strong\u003e Both sizes have a slim footprint built for standard aquarium stands. Check the clearance figures above, 20 inches for the 5 Gallon and 26.5 inches for the 10 Gallon, so the lid has room to open.\u003c\/p\u003e","brand":"Simplicity","offers":[{"title":"5 Gallon","offer_id":49121810874587,"sku":"SIM6001","price":149.95,"currency_code":"USD","in_stock":true},{"title":"10 Gallon","offer_id":49121810907355,"sku":"SIM6003","price":219.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/SIM6001-Simplicity-5-Gallon-Easy-Fill-ATO-Reservoir-angled-main__71644.jpg?v=1786372940"}],"url":"https:\/\/squeakysaquatics.com\/collections\/auto-top-off\/freshwater.oembed","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}