Review on DIGITEN Upgraded Refiller Automatic Aquarium by Susan Cacal

I wanted to try this ATO. It was very easy to install and set up. It contained all the necessary details. Has overflow protection, maybe HMMM. Overfill protection is in place, but only if you want the overall water level in the aquarium to start dropping. When the floats are folded, the bottom part is the main sensor and the top part is the overflow sensor. This means that if you overflow without a spill, the water will rise about an inch. I lower my tanks about an inch from the top with water, usually even with the bottom cut off. So I may or may not have overflow protection. It looks like the activation distance is the same for both swimmers. It would be nice if the top float was activated say 0.25" or 6-7mm off the bottom. That's why I gave 3 stars. A little redesign of this top float and it will be the perfect system for everyone Also, I don't think this device will be suitable for installation in a sump. There simply isn't enough length adjustment in the mount to match the water level in the sump. At least not without the need to "crack the mount". ". I will edit this post if and when something happens.