I like them a lot, they were simple to connect to Bluetooth through the AI app, and I spent some time and programmed one....then set the other as it's opposite slave. So when one is ramping up the other is ramping down. I have periods of random flow, periods of pulsing, a little constant on at 20% during the overnight. Seems pretty versatile! However thick my glass is must be near the peak of thickness though. One side fell off one day, but I was home to see it so no problems. But all of those reviews that mention not for thick glass are
true unless you can beef up the magnets somehow. The internets says my tank is 1/2" glass which, if I remember correctly, is the max thickness.
@Andrew_bram had a brand new one, never been in water, that he was thinking of possibly selling. If you might be looking for one. He also has one on his upstairs cube.