09-02-2006, 03:00 AM
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I do not agree to that, plecos can be kept in a tank once your water quality is good, I have 3 plecos in my tank and the filter is only 1-1 1/12 months old, and my water is excellent.
So post your water parameters up here and ill tell you weather your pleco safe. For a 20 gal you have many options available, and pleco that does not get over 4'' will be happy in your tank. I could give you a few like: L002, L204, L168, L144, BN. All these fish plus many more would make a nice hope out of your 20 gal.