Filtration
Hello all, I have a few questions. I have a 55 gallon for about 6 years. I only have had a couple of clownfish in it. Over the weekend I add 4 more clownfish. I would like to know thoughts on canister filters. I have only had 2 hang on the back filters, which have done so far, but now with more fish I'm looking at more or better filtration.
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