Well I didnt want to miss of the action in the tank so I put this in so I wouldn't have to get up. It also helps in the nutrient levels of the tank. 8O
Ok as you likely guessed it is a wave maker with no moving parts. It fills up through the top and eventually over comes the trap and flushes. It goes about every 30 secs. there is 2" output going around to the back of the tank where it gushes out making a wave. BTW this is a flush valve toilet that has a Male thread on top to help with hook up.

Ok as you likely guessed it is a wave maker with no moving parts. It fills up through the top and eventually over comes the trap and flushes. It goes about every 30 secs. there is 2" output going around to the back of the tank where it gushes out making a wave. BTW this is a flush valve toilet that has a Male thread on top to help with hook up.