so this can only be done with tunze power heads? will it work with seio's?
and also you need a controller for the power head aswell?
the list is then a PH, a controller (7091?), and your DIY controller, and the scrap acrylic..
i am thinking this is too big and ambitious a project for my 20G tank..
i did however stumble across a 6055 for $200 brand new..