{"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\/products\/simplicity-easy-fill-ato-reservoir","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}