Works great!
We ordered this product to use in conjunction with our 55 gallon fish tank for our small indoor aquaponics.  Installing it was super easy, the "fun" part was playing with the down pipes and ensuring the cycle breaks. Hubby did not want to read the instructions and it was a battle of wills between us as to what to try to make it work. In the end, several hours later, after the instructions were read, a minuscule adjustment to allow air to flow back, it works!!! Bottom line is, read the instructions fully and adjust accordingly.
Rating: 5 stars