--- product_id: 42084310 title: "ZAOJIAO Auto-top-Off ATO Solution Auto Water Filler Adjustable Float Valve Mounting for Aquarium Sump" brand: "senstree" price: "€ 31.10" currency: EUR in_stock: true reviews_count: 13 category: "Senstree" url: https://www.desertcart.pt/products/42084310-zaojiao-auto-top-off-ato-solution-auto-water-filler-adjustable store_origin: PT region: Portugal --- # Auto water fill with leak-proof O-ring seal Water level range adjustable 0-25mm (0-10") Adjustable float valve fits 5-18mm glass ZAOJIAO Auto-top-Off ATO Solution Auto Water Filler Adjustable Float Valve Mounting for Aquarium Sump **Brand:** senstree **Price:** € 31.10 **Availability:** ✅ In Stock ## Summary > 💧 Keep your aquarium flawless—automate your water top-off like a pro! ## Quick Answers - **What is this?** ZAOJIAO Auto-top-Off ATO Solution Auto Water Filler Adjustable Float Valve Mounting for Aquarium Sump by senstree - **How much does it cost?** € 31.10 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/42084310-zaojiao-auto-top-off-ato-solution-auto-water-filler-adjustable) ## 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 - • **Leak-Free Operation:** Includes O-ring and 1/4" threaded connection to ensure zero leaks and hassle-free maintenance. - • **Durable, Premium Materials:** Crafted from high-quality polyethylene plastic and 5mm acrylic bracket for long-lasting reliability. - • **Smart Auto Top-Off Control:** Automatically refills water and shuts off to maintain perfect levels—no more manual refills. - • **Customizable Water Level Range:** Adjust water level from 0 to 25mm (0-10") to fit your unique aquarium needs. - • **Precision Fit for Your Aquarium:** Easily mounts on 5-18mm thick sump glass for a seamless setup. ## Overview The ZAOJIAO Auto-top-Off ATO Solution is a precision-engineered float valve system designed for aquarium sumps with glass thickness between 5-18mm. Featuring durable polyethylene plastic and acrylic construction, it offers an adjustable water level range of 0-25mm (0-10") and a leak-proof 1/4" threaded connection with O-ring seal. This easy-to-mount system automates water refilling, ensuring consistent water levels and reducing maintenance effort for freshwater and saltwater aquariums alike. ## Description The ATO system is easy to hang on to your aquarium sump,it can automatically fill and shut off inlet water. you make it fit a wide variety of positions and heights. 1, It is suitable for 5 to 18mm thickness of aquarium. 2, The range of water level from aquarium sump top is 0-25mm or 0-10". 3, The bracket is made with high quality 5mm acrylic. 4, It meet 1/4" tube, come with O-ring, don't leak. Packing list: 1 x Float valve 1 x Acrylic bracket 4 x Nylon screw Review: Works well with the right pressure. - I wanted to write a review because of all bad press these little floats have gotten. (fresh water setup) In the pictures above, you will see where I used the blue tubing kit and I baught the extra tubing just incase I messed up. Runing the tubing (hidden) along behind the shelf, I did put in the (provided) ballvalve to cut off the water at the tank. Under the sink, I used two Ice maker line kits with the taps. One to the hot and one to the cold. This will balance the desired temp to the tank. The line tap valves allow me to adjust the temp and the preasure on the float. (This is the key). If your float bypasses after its all hooked up and full? Simply shut the preasue on the line tap valves. (problem salved). Everything you see, I got with three kits. No extra parts were used. Notice the extra "T" with valve? This is for the ice maker on the fridge. If you are worried about warm water to the ice maker? Science has proven, hot water freezes faster and cleaner. Well! I just found out I can not "Link" so. The searchable names of the products below. Malida RO Water Systems Ice Maker Kit 1/4" for Reverse Osmosis Systems and Water Filters (blue) cck cck-2 Malida Size 1/4 Inch, 10 Meters 30 feet Length Tubing Hose Pipe for RO Water Filter System (blue) 2 of the LDR 509 5100 Ice Maker/Humidifier Installation Kit, 1/4-Inch x 25-Foot, Poly Tubing I hope this helps for people who want an automated fill for fish tanks. Review: Bueno - Bueno ## Features - The ATO system is easy to hang on to your aquarium sump. - It is suitable for 5 to 18mm thickness of aquarium. - Pressure: 0.02-0.8MPa. - Material: Polyethylene Plastic and Acrylic. - The range of Water level from aqurium sump top is 0-25mm or 0-10". ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B06Y42PPWN | | Best Sellers Rank | #53,675 in Pet Supplies ( See Top 100 in Pet Supplies ) #17 in Aquarium Water Pump Accessories | | Brand | SENSTREE | | Brand Name | SENSTREE | | Connector Type | Threaded | | Customer Reviews | 4.3 out of 5 stars 500 Reviews | | Exterior Finish | Plastic, Acrylic | | Inlet Connection Size | 6.35 millimeters | | Inlet Connection Type | Other | | Manufacturer | ZAOJIAO | | Manufacturer Part Number | 14858009 | | Material | Polyethylene Plastic Acrylic | | Material Type | Polyethylene Plastic Acrylic | | Maximum Pressure | 800 pascal | | Model Number | 14858009 | | Number of Items | 1 | | Number of Packs | 1 | | Number of Pieces | 6 | | Number of Ports | 1 | | Outlet Connection Size | 25 millimeters | | Outlet Connection Type | NPT | | Size | 1 Count (Pack of 1) | | Thread Size | 1/4 inch | | Thread Type | 1/4-20 NPT | | UPC | 604753636303 | | Unit Count | 1 Count | | Valve Type | Float Valve | ## Product Details - **Brand:** SENSTREE - **Exterior Finish:** Plastic, Acrylic - **Inlet Connection Size:** 6.35 Millimeters - **Inlet Connection Type:** Other - **Material:** Polyethylene Plastic Acrylic - **Maximum Operating Pressure:** 800 Pascal - **Number of Packs:** 1 - **Number of Ports:** 1 - **Outlet Connection Size:** 25 Millimeters - **Outlet Connection Type:** NPT ## Images ![ZAOJIAO Auto-top-Off ATO Solution Auto Water Filler Adjustable Float Valve Mounting for Aquarium Sump - Image 1](https://m.media-amazon.com/images/I/31Mz+kX0seL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works well with the right pressure. *by C***L on September 15, 2018* I wanted to write a review because of all bad press these little floats have gotten. (fresh water setup) In the pictures above, you will see where I used the blue tubing kit and I baught the extra tubing just incase I messed up. Runing the tubing (hidden) along behind the shelf, I did put in the (provided) ballvalve to cut off the water at the tank. Under the sink, I used two Ice maker line kits with the taps. One to the hot and one to the cold. This will balance the desired temp to the tank. The line tap valves allow me to adjust the temp and the preasure on the float. (This is the key). If your float bypasses after its all hooked up and full? Simply shut the preasue on the line tap valves. (problem salved). Everything you see, I got with three kits. No extra parts were used. Notice the extra "T" with valve? This is for the ice maker on the fridge. If you are worried about warm water to the ice maker? Science has proven, hot water freezes faster and cleaner. Well! I just found out I can not "Link" so. The searchable names of the products below. Malida RO Water Systems Ice Maker Kit 1/4" for Reverse Osmosis Systems and Water Filters (blue) cck cck-2 Malida Size 1/4 Inch, 10 Meters 30 feet Length Tubing Hose Pipe for RO Water Filter System (blue) 2 of the LDR 509 5100 Ice Maker/Humidifier Installation Kit, 1/4-Inch x 25-Foot, Poly Tubing I hope this helps for people who want an automated fill for fish tanks. ### ⭐⭐⭐⭐⭐ Bueno *by J***E on July 28, 2026* Bueno ### ⭐⭐⭐⭐ Works after some "futzing" *by S***R on July 31, 2021* I have a tank for exotic plants which requires a 2-inch level of water at all times. I've tried several of these (they all seem to be based on the same basic design) and found it rather confusing both in terms of the size of the hoses that are compatible and it terms of performance. There are plenty of ways to step up or step down hose sizes, so I won't get into that. However in terms of performance, I didn't find any of these which didn't leak where the hose connects to the float unit. What I did learn after some trial and error, however, is that a little plumbers teflon tape fixes the leak problem straight away (at least it did for my setup). Too bad there are no instructions with this or the other units as it probably would prevent lots of returns. FOLLOW-UP ... once I got this installed properly it seems to be working very well. The plexiglass platform with an adjustable level is definitely the best way to go as compared with less expensive "poke a hole in something" offerings. I would buy this again and do recommend it. Use teflon tape to prevent leakage around the tube-to-unit connector. ## Frequently Bought Together - ZAOJIAO Auto-top-Off ATO Solution Auto Water Filler Adjustable Float Valve Mounting for Aquarium Sump - Malida 1/4 inch O.D. Length 32.8ft(10 meters) RO Water Tubing, Hose Pipe for RO Water purifiers System,+ 1/4 O.D quick connector 10pcs - ZAOJIAO Tube Bulkhead Connector Push Fit Quick Connect for RO Water Reverse Osmosis System (Pack of 5) (1/4" Tube Bulkhead Connector) --- ## 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.pt/products/42084310-zaojiao-auto-top-off-ato-solution-auto-water-filler-adjustable](https://www.desertcart.pt/products/42084310-zaojiao-auto-top-off-ato-solution-auto-water-filler-adjustable) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-10-15*