FZONE ATO System, Auto Top Off with Dual Optical Sensors for Aquarium Green | Dual optical sensor ATO system for reef and freshwater tanks, with precise water level control and stable operation

Flow is very strong and setup was a breeze. The sensor itself is very small so it doesn’t take up much space visually. Just make sure to use the included check valve so your tank doesn’t drain from the tube.

Very affordable and easy setup. Wonderful customer service! They quickly diagnosed a small issue I was having and sent replacement parts out within a day. Would definitely recommend this product to hobbyists!

Product Review I purchased this item, and it worked well for about a week. Unfortunately, I came home a few hours after doing a water change on my aquarium to find that my living room was completely flooded. Before this happened, I had already noticed that the auto top-off system would occasionally add water when the aquarium did not need it. Because of that, I moved the indicator sensor lower in the aquarium in an attempt to prevent unnecessary filling. The sensor would also frequently blink red, which appeared to indicate that something was wrong. This is actually my second unit, and I have experienced similar issues with both. In this case, the system continued adding water even though the aquarium was already at the appropriate water level, eventually causing it to overflow and flood my living room. Thankfully, I came home a few hours later. If I had been away for the day or traveling, the damage could have been significantly worse. This type of failure can absolutely ruin your flooring and potentially cause extensive water damage. I will not be purchasing this product again. If you decide to purchase one, please be aware that an uncontrolled fill/overflow is a real possibility. I strongly recommend monitoring it closely rather than assuming it will shut off when the water reaches the proper level.

I originally bought one for my 40 gallon and loved it evaporation would have my tank getting to about 3/4 before I manually top it off WITH THIS BAD BOY AND A 5 GALLON BUCKET im set for 2 months without ever having to think about topping off my aqaurium silent pump amazing prize its small and easily installed to any aqaurium I bought another for my 20 gallon

First off, these are designed to work better with a rimless tank. That being said, i have mine as high as it can go, and the magnet still holds very well through the plastic rim up top on my tank. I like to keep my water level on the higher side to look nice with the canopy that i made. Also, with the clip that is included with this ATO, it will not work with a rimmed tank. Easily solved by running the included tubing of the discharge of the pump along my FX6 return header and using ty-wraps to attach it (white ones) . That keeps the return tubing right above the water surface where you cannot see it while enjoying the tank and that allows my RO water to flow right in to the return stream from the pump where it mixes well with the existing saltwater. You cannot even hear this pump run, but in my case i have cooling fans running since i am running metal halides on my reef tank. I gave it four stars just due to the fact that it is a good system so far but i did not like the fact that the included clip was designed for rimless tanks only. I have read reviews about people having issues when doing water changes and unplugging the system so it will not fill in the midst of the water change. I leave mine plugged in but only unplug the pump side from the dual power adapter. one side is for the sensor and one is for the pump (just unplug the pump) and no issues whatsoever.

While a lot of people think ATO systems are just for saltwater setups, the FZONE ATO System is amazing for freshwater aquariums. It keeps your water line consistent, so you never have to deal with the unsightly lines on the glass or the noisy filter as it gargles from dropping water levels. Setup takes just a couple of minutes. This is great for any setup but I would personally buy more for a heavily planted tank instead of doing water changes (recommended for experts only).

Having 5 separate aquarium tanks on 2 different floors, it gets tiring topping off each tank every few days. So I decided to try this Fzone Auto top off system for my 20 gallon long tank. The installation was super easy. The sensor is really small and has a magnet to stick on the glass. The only thing I wish it had was a way to turn off the led light when it’s on standby as the light can be bright at night. I have it feeding water from a 5 gallon bucket and just filled it up for a second time since installing it. The pump is pretty silent when it refills. After using it for almost a month now I can definitely say its well worth the money.

I purchased this for my nano reef tank and it works well. Simple setup. I wish in a future or maybe an upgraded model that a second sensor to monitor the top off containers water level could be included so that the pump does not run dry. UPDATE I have been running this since my purchase and I have woken up to water on the floor again. Do not buy this unless you want ruined floors, cabinets, etc.. For saltwater fish or reef tanks it is unacceptable as the water is either to high or to low. I have other ATO and this is not acceptable.

Tres veces continúo bombeando agua aunque ya estuviera sobre el límite. Realmente peligroso. No es confiable y puede causar daños importantes

Lo utilizo para mi acuario marino y la verdad ni un sola queja. Funciona a la maravilla desde el primer día.

Best

Fantastisch! Makkelijk aan te sluiten en werkt goed.

4月に購入して半年以上使用しましたが、30cmキューブ水槽で問題なく稼働しています。 冷却用のファンを付けているので毎日1センチ程度は水位が下がりますが適宜反応して給水しており、12Lのタンクに繋いでおおよそ3週間程度は持ちます。 半年間で赤点灯で給水しなくなるエラーが3回ありましたが、いずれも電源の抜き差しで復旧しており、今のところ給水が止まらない障害は起きていません。 水換えの時にセンサー周辺を掃除しないと苔により反応が悪くなるようで、完全にノーメンテとはいきませんが、毎日の足し水と比べたら相当な手間が省けます。 しいて言えばエラーの原因が不明なので少し不安は残りますが、1週間以上様子を見れないような状況でなければ問題はないかと。 同じ仕組みを自作しようとしても価格程度のコストは掛かると思いますし、似たような製品が少ない中で高値でもなくおすすめできる商品だと思います。