great product works good. By Danny on 5/16/12Danny would recommend this product to a friendgreat product but it's my first ato device. i do not any anything to compare it to as of yet but is definitely one of the most expensive ato devices out there
Reliable By Fawn on 2/12/12Fawn would recommend this product to a friendSimple, yet reliable. I've had it working in my sump now for several months and it's been working flawlessly. Operates by a drop in the water pressure in a tube you mount vertically in the water. Would have appreciated a little more detail in the description before I bought, otherwise, satisfied with this purchase.