Re: 4ft goldfish tank with canister or sump fliter?
I prefer sump setups because of the freedom you have to customize it. Sumps are pretty straightforward to maintain. Just remove the media, give it a good scrub, and then return it to your tank. I don't believe in cleaning the tubes because the tubes contain benefical bacteria and all those "Gunk" you see are actually colonies of Nitrifying bacteria so if I were you, I won't touch those tubing.
Does this make sense: ~Imperfect Past equals future tense~
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