{"product_id":"tmc-optical-auto-top-up","title":"TMC Auto Top Up UK ATO System with Pump for Marine \u0026 Freshwater Tanks","description":"\u003cp\u003eThe Optical Auto Top Up UK is a reliable, precision device for maintaining stable water levels in freshwater and saltwater aquariums. Featuring a high-quality infrared optical sensor with triple detection points, it automatically activates the included DC pump to replenish evaporated water. Ideal for sumps and display tanks alike, it offers compact installation and long-term durability.\u003c\/p\u003e\r  \u003ch3\u003eKey Features:\u003c\/h3\u003e\r \u003cul\u003e\r   \u003cli\u003eInfrared optical sensor with triple detection for accurate water level monitoring\u003c\/li\u003e\r   \u003cli\u003eDry-run protection prevents pump damage\u003c\/li\u003e\r   \u003cli\u003eMagnet-mounted for easy, compact installation\u003c\/li\u003e\r   \u003cli\u003eIncludes 2m flexible hosing, anti-siphon valve, and hose clamp\u003c\/li\u003e\r   \u003cli\u003eEnergy-efficient DC pump with refill capability\u003c\/li\u003e\r   \u003cli\u003eCompatible with both marine and freshwater aquariums\u003c\/li\u003e\r \u003c\/ul\u003e\r  \u003cp\u003e\u003cstrong\u003eBox Contents:\u003c\/strong\u003e Optical sensor, DC pump, 2m 6\/9mm flexible hosing, anti-siphon valve, hose clamp, PSU, and instructions. Sensor: 25 x 25mm (diam.) x 35mm, Pump: 45 x 28mm (diam.) x 38mm.\u003c\/p\u003e\r  \u003cp\u003eMaintain your aquarium with confidence using the Optical Auto Top Up UK—simple to install, reliable in use, and built to last.\u003c\/p\u003e","brand":"TMC","offers":[{"title":"Default Title","offer_id":54934491890003,"sku":"1033883","price":50.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1076\/9324\/4755\/files\/nkxnj42xyw5.jpg?v=1789331396","url":"https:\/\/progradewarehouse.com\/products\/tmc-optical-auto-top-up","provider":"PRO GRADE WAREHOUSE","version":"1.0","type":"link"}