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  1. Beginner Freshwater Aquarium
    Hello all. I have a 90 gallon tank with a canister filter that is driving me up the wall. I want a sump but rather not pay $400 for a pre-made. So im going to DIY. But... How should I set my sump up for a freshwater tank? People have said dont use bio-balls that they trap to much crap. So whats...
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