Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
If you start with the right side of Hilde's drawing, include as many bottles as you want, and a separator bottle, that is the way I did mine. But one separator bottle per generator bottle. If I wanted 2 generators per tank I set them up separately.
Then... see the left? The pump and gravel vac tube? I just used a bubble stone, and suction cupped it under whatever powerhead was already in the tank.