ATO Auto Top Off System NG11 for Saltwater Aquarium Long Life Design with Dual Optical Sensor for Both Reef and Fresh Tanks

This product works great! It's easy to set up and I no longer need to top off my tank manually which has lead to more stable parameters. The pump is quiet and the sensor is bulky but accurate. No need to spend $$$ on the expensive name brand ATO's.

The ATO Auto Top Off System NG11 is a budget-friendly option with a durable, seamless design and dual optical sensors that make it easy to set up and reliable for both reef and freshwater tanks. It uses an adaptive algorithm to adjust water delivery, which I love, and it’s great for being sturdy and simple. Overall, it’s a solid entry-level ATO, though pairing it with a backup float switch adds extra peace of mind.

Worked fine for a few weeks, I came home on my lunch. Found a house full of smoke and the ato plug shorting out inside and on fire. I have damage to my stand, my tank, and my wall. This has absolutely nothing to do with moisture getting to it. Below my tank is completely dry and I have drain loops in all my cords. I am very lucky I came home when I did or I would need a new house.

Bought this auto top-off for my reef tank last month. It was simple to set up, and the dual optical sensors feel much more reliable than the old float switch I was using. No more worrying about the water level while I'm away for the weekend. For the price, it's been solid and gives me real peace of mind.

Worked great at first, recently quit pumping :(

It's easy to set up and I no longer need to top off my tank manually which has lead to more stable parameters. Keeps the water level stable all the time. I recommend it.

I bought this because I needed an ATO, and this was cheap. I have never had one and wanted to try out a cheap one before I bought something expensive, and decided I didnt need it. I like this very much. It works well enough that I am not even going to bother to upgrade it. If this does eventually fail, I would most likely just buy another one of these.

This automatic water refill system works perfectly. It’s very easy to set up and gives me peace of mind when I travel. It keeps the water level stable and refills automatically when the water evaporates. Very reliable and convenient. I highly recommend it.