I have a 29gal sump with 7" filter sock, Matrix and some sponge filters, I'm pumping 1000 gph. It's a simple sump, no baffles just a tank, easy to change the sock. Eheims are great filters just not for Pbass and messy fish because they don't flow enough, I only use them as a redundancy filter. I think if you have 10X turn over you would be OK, maybe 2 FX5s or a sump, whatever just get the turn over. I know some will say 2 FX5s are too much for a 90g and I will disagree through experience and proof of healthy adult Pbass that I raised since 1.5". I really really really believe in turn over and bio in filtration for Pbass.






