Originally Posted by Fidgetromeo
I have a fluval 106 canister and the bottom try with the biomax is only about a third full, that's putting in all of what the filter came with. So is it right to be so empty? How full should it be?
I've doubled the tray biomedia before. The main issue I find is it takes a bit of testing to make sure the flow rate is still good.
For ammonia I've never really noticed a difference for a cycled tank.