{"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","url":"https:\/\/squeakysaquatics.com\/products\/autoaqua-smart-ato-nano-g2-optical-auto-top-off-system","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}