{"product_id":"n-fill-smart-auto-top-off-system","title":"N-Fill Smart Auto Top Off System","description":"\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003ch3\u003eAffordable \u0026amp; Reliable Auto Top Off System\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRedundant, Dual Float Sensors\u003c\/li\u003e\n\u003cli\u003eSmart Over-Fill Protection Built-In\u003c\/li\u003e\n\u003cli\u003eIntuitive Controller w\/ Status Indicator LEDs\u003c\/li\u003e\n\u003cli\u003eIdeal for Nano to Mid-Size Tanks\u003c\/li\u003e\n\u003cli\u003eSafe for Freshwater or Saltwater Aquariums\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe N-Fill Auto Top Off (ATO) is a simple, affordable system built specifically for nano to mid-size aquariums. Using dual float sensors and smart overfill protection, it automatically replaces evaporated water with fresh RO\/DI so your tank's salinity stays stable day after day. The compact controller, clear status LEDs, and easy setup make it approachable for beginner hobbyists, while still being an ATO experienced reefkeepers can trust. By keeping the water level consistent, the N-Fill helps to reduce stress on fish and corals, improve overall tank stability, and eliminate the need for daily manual top-offs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Float Sensors\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTwo independent float switches monitor the same water line. The controller starts a refill whenever either sensor detects low water. Even if one sensor fails, the other still triggers top-offs. This redundancy helps prevent missed refills and provides an extra layer of stability compared to most ATOs on the market.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSmart Overfill Protection\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIf the pump runs for more than about 90 seconds, the controller pauses filling and triggers an audible alarm with a red status LED. This fail-safe helps prevent overfilling if a float sticks low, flow is restricted, or the reservoir behaves unexpectedly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSimple On-Board Control Buttons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eHold to run the pump for priming or quick refills, release to stop.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePause:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003ePress once for a 30-minute pause. Ideal for feeding or light maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStop:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ePress once to disable automatic filling during major maintenance. Resumes after 24 hours.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eLED Status Indicators\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower: \u003c\/strong\u003eController has power and is ready.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilling:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eATO pump is actively running.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStatus: \u003c\/strong\u003eOff during normal operation, blinking when paused, and solid red during stop mode or overfill alarm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Input:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAC 100–240 V, 50\/60 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Output:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDC 12V 1A, UL Listed Adapter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Pump Head:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e160 cm | 63\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Flow Rate:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e180 L\/h | 47.6 GPH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Glass Thickness:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUp to 15 mm | 0.6\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor Adjustment Range:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eUp to 10 cm | 4\" Below Tank Rim\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank Compatibility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFreshwater and Saltwater Aquariums\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl Modes:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eManual Fill, 30-Minute Pause, 24-Hour Stop\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOver-Fill Protection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAuto Timeout After ~90 Seconds with Alarm and Status LED\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED Indicators:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ePower, Filling, Status\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's Included?\u003c\/h3\u003e\n\u003cp\u003eN-Fill Controller\u003c\/p\u003e\n\u003cp\u003eDual Float Sensors with Adjustable Holder\u003c\/p\u003e\n\u003cp\u003eN-Neon ATO Tubing Organizer\u003c\/p\u003e\n\u003cp\u003eSubmersible DC Pump\u003c\/p\u003e\n\u003cp\u003eWater Tubing (2 M | 6.5 ft)\u003c\/p\u003e\n\u003cp\u003eSiphon Breaker Connector with Cover\u003c\/p\u003e\n\u003cp\u003eUL Listed 12V 1A Power Adapter\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Nature Dimensions","offers":[{"title":"Default Title","offer_id":52331930878228,"sku":null,"price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0791\/0175\/5668\/files\/257012-nature-dimentions-ato-system-1.webp?v=1775703910","url":"https:\/\/www.lushcorals.com\/products\/n-fill-smart-auto-top-off-system","provider":"Lush Corals","version":"1.0","type":"link"}