BF McUmber Posted March 30, 2022 Share Posted March 30, 2022 With the CO-OP sponge filter being such a coarse sponge, What would happen if you never cleaned it? Would it just slowly catch mulm until it eventually clogged? If so, while the sponge material gets dirty would that dirt buildup inhibit the Beneficial Bacteria's function? The context for the question is that I got a random Nitrite spike in my Lipstick goby tank that confuses me and has me thinking about random stuff. The only big change I made to the tank was that I added a heater to bring the tank from 65 to 68 degrees. I hadn't cleaned the sponge in maybe 3 weeks but had gravel vac'ed weekly. With only 3 fish in the tank when I do clean the sponge not much stuff comes out. Link to comment Share on other sites More sharing options...
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