Well thats true. Do stuff to fast it wont work out. I have every thing I need to set up the tank except for the carbon+bacteria. I was going to use a filter rated for a 40-55g tank which the flow rate is 200gph. So I would need the whisper20 rated @ 106gph? Or heres another Idea

The water would just over flow into the first chamber where the MJ would force water through a bag filled with carbon into section 2 ( there would be big holes in the baffel between sec 1 & 2) then the water would be pumped back into the tank by the MJ.


Would that work instead of using the HOB?