This may be a dumb question but I want to get everything right before I start my high-tech plant aquarium (standard 55 gal). I will be using an Emperor 400 and was considering using CellPore cartridges to increase biofiltration. Can you have too much biofiltration? Can you remove too much N that is needed for plants? Thanks everyone for putting up with me for the next couple of weeks while I get this set up. Cheers.