Like the title says, I have never used a sponge or internal filter. I bought a 30 gallon sterilite container today to use as a quarantine tank for fish I have coming in about two weeks. What filters should I look at? I'm going to have a uv hang on back filter as well to increase aeration but I'd like to rely on the sponge or internal filter mainly for mechanical and biological filtration. Since it's just a temporary tank I'm trying to stay relatively cheap.
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