I used a seeded sponge that my local aquatic store let me buy to help my tank cycle. Now that my tank is cycled what should I do with the sponge that I have inserted into my hang on back filters. Should I just keep them jammed into the filters (Emperor 400, Penguin 350) or do I need to get rid of them?
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Sent from my SM-G360P using Aquarium Advice mobile app