Hang on back filter. Aquaclears are good. Marineland filters are good as well. Don't get a cheap filter, you get what you pay for.
And don't give all your filter media away or you'll end up having to recycle the tank (unless its been empty for awhile...).
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*Kristin*
5 Planted tanks:
55g, 40g, 29g, 20g, 5.5g
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