I have a 55 gallon tank with 2 oscars about 8 inches long,I feed them pellets and feeder goldfish,and I have an Eheim 2026 professional II and a penguin 170 with a biowheel.My question is, would a emperor 400 filter help keep my tank cleaner?I know oscars are a messy fish,I do water changes every 2 weeks but it still gets so dirty on the bottom.I also have a hagen powerhead in the tank and am thinking about quick filter in it or a sponge.Would that help?I have killed(or maybe the oscars did) 2 pleco's, I cant seem to keep them alive.Please Help,Thank you.
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