Originally Posted by Chevko
It just seems way too easy to be true is the thing, lol.
Silly, isn't it? OK you can make it more complicated by putting in an adjustable air-flow restricter valve instead of capping the lift tube with Java moss or foam. Costs about 3 bucks.
If your pump is located next to or lower than your tank, you probably should install a one-way valve in the airline to prevent reverse siphoning back into the airpump if your power goes out. Or you can hang the pump on the wall higher than your water level. That'll fix it.
Fitting an airstone at the air outlet makes smaller bubbles. That's a good thing
Sorry, can't think of any more ways to make it more complicated.