{"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","url":"https:\/\/squeakysaquatics.com\/products\/xpaqua-sumpless-ato2","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}