I was wondering if there's anything wrong with filling up a fluval with biomax only and not use any sponge or carbon??? I'm just trying to avoid the build up of nitrates. I would also like to know if my idea of biomax only is pointless.

I agree,i believe that it will build up your nitrates very high being that it traps all kinda crap unless it is cleaned on a regular basis.imo its worthless being that you can get the same effects with LR .i would fill it with carbon if you had to.D
