--- product_id: 345333783 title: "Auto Top Off System, ATO System, Fish Tank Sump Water Filler Refiller, Automatic ATO System for Aquarium with Pump,Water replenishment system, DIGITEN Smart ato System for fish tank" brand: "senstree" price: "€ 126.38" currency: EUR in_stock: true url: https://www.desertcart.hr/products/345333783-auto-top-off-system-ato-system-fish-tank-sump-water store_origin: HR region: Croatia --- # Dual float sensor for precise water level control Plug-and-play with included ETL power adapter & pump Adjustable bracket fits aquariums up to 16mm thick Auto Top Off System, ATO System, Fish Tank Sump Water Filler Refiller, Automatic ATO System for Aquarium with Pump,Water replenishment system, DIGITEN Smart ato System for fish tank **Brand:** senstree **Price:** € 126.38 **Availability:** ✅ In Stock ## Summary > 💧 Keep your aquarium flawless—automate water top-offs like a pro! ## Quick Answers - **What is this?** Auto Top Off System, ATO System, Fish Tank Sump Water Filler Refiller, Automatic ATO System for Aquarium with Pump,Water replenishment system, DIGITEN Smart ato System for fish tank by senstree - **How much does it cost?** € 126.38 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/345333783-auto-top-off-system-ato-system-fish-tank-sump-water) ## Best For - senstree enthusiasts ## Why This Product - Trusted senstree brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Siphon Break Safety:** Optional siphon break prevents unwanted backflow, protecting your aquarium’s ecosystem. - • **Effortless Installation:** Complete kit with adjustable bracket and durable PC holder for a perfect fit every time. - • **Smart Dual Float Sensor:** Never worry about overfilling or dry pumps with fail-safe water level detection. - • **Universal Compatibility:** Designed for aquariums and sumps up to 5/8" thick, ideal for busy pros who value reliability. - • **Plug-and-Play Convenience:** All parts included—just connect and relax while your sump stays perfectly topped off. ## Overview The DIGITEN Smart Auto Top Off System is a reliable, easy-to-install aquarium water replenishment solution featuring a dual float sensor for precise water level management, an adjustable bracket for aquariums up to 16mm thick, and a plug-and-play design with included pump and ETL-certified power adapter. It prevents overflow and dry running, ensuring your fish tank sump stays perfectly balanced with minimal maintenance. ## Description Auto Top Off System, ATO System, Fish Tank Sump Water Filler Refiller, Automatic ATO System for Aquarium with Pump,Water replenishment system, DIGITEN Smart ato System for fish tank ## Features - 💧💧【Simple, Complete, Smart Automatic Top Off System】 aquarium automatic water supply system, super easy installation and maintenance. Suitable for aquariums up to 5/8"(16mm) thick, durable PC material holder to prevent move, adjustable bracket on holder make different water levels possible. - 💧💧【Relay Control】 precise dual float water level sensor for overfilling protection. When the water goes below the minimum water level , the power will be activated, the pump automatically works, and cut off once the water level reach to maximum. The second float ball will work when the first float ball fails. - 💧💧【Siphon Break】 The siphon break is optional installation part. It is recommended that the water level of display tank be higher than the reservoir, and DON’T leave the end of the water supply pipe in the water, otherwise, it will siphon after the pump shuts off, if so the siphon break must be installed at the end of the water supply pipe. - 💧💧【Plug-and-Play with all parts included】 Everything you need is included, it will also come with a pump and a ETL listed power adapter. Safely keep sump water levels stable, no moving parts that can fail. - 💧💧【Widely Used】Suitable for all kinds of fish tanks, aquariums, sumps, etc. The range of water level from aqurium sump top is 0-17cm or 0-6.7".Suitable for aquariums up to 5/8"(16mm) thick, save you a lot of time to enjoy your life. The Smart ATO Complete Kit will never make water overflow your tank, it is especially suitable for the sump with a lot of evaporation. 12 month warranty! ## Technical Specifications | Specification | Value | |---------------|-------| | Package Dimensions | 14.9 x 14.7 x 9.1 cm; 500 g | | Item model number | ZJ-ATO19-UK | | Colour | Black, White | | Number of Items | 1 | | Quantity | 1 | | Special features | Durable | | Specific Uses | Indoor | | Batteries required | No | | Batteries Included | No | | Item Weight | 500 g | ## Product Details - **Brand:** SENSTREE - **Material:** silicone - **Special feature:** Durable - **Item weight:** 500 Grams - **Specific uses for product:** Indoor - **Style:** Protection - **Colour:** Black, White - **Included components:** Holder, Dual Float Ball Sensor, Pump, Power Adapter, Splitter Adapter Cable, Silicone Hose, Siphon Break - **Vivarium Type:** Aquarium - **Manufacturer:** SENSTREE ## Images ![Auto Top Off System, ATO System, Fish Tank Sump Water Filler Refiller, Automatic ATO System for Aquarium with Pump,Water replenishment system, DIGITEN Smart ato System for fish tank - Image 1](https://m.media-amazon.com/images/I/61gosvGSoxL.jpg) ## Questions & Answers **Q: What are the dimensions of the pump? Will it fit in a normal 5l water container?** A: Would fit in a normal 5l water container **Q: Does this come with a 3 pin U.K. plug?** A: yes, this does have a UK plug. ## Frequently Bought Together - SENSTREE Auto Top Off System, ATO System, Fish Tank Sump Water Filler Refiller, Automatic ATO System for Aquarium with Pump,Water replenishment system, DIGITEN Smart ato System for fish tank - Fluval Carbon 800g complete with net bags --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/345333783-auto-top-off-system-ato-system-fish-tank-sump-water](https://www.desertcart.hr/products/345333783-auto-top-off-system-ato-system-fish-tank-sump-water) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-04-23*