I have a oscar and stunted rd in a 75.I dont think i have a enough filtration becuase every time i do a water change which is every 2 weeks there is alot of food and waste kicked up.Now i kno thats how it usually is but it is not ur average kick up tho.all i have for filtration is a penguin 350 filter what other filter should i use.If i had to use a canister the only canister i would use would be a magnum.But i prefer a powerfilter.what other filter should i use.