The Planted Tank Forum - View Single Post - Bio-Balls in a canister filter?
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Old 01-20-2013, 02:00 PM   #4
csf
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Yes. The work well enough. In general the biological filter aspect of a planted tank is all over the filter, tank, plants, rocks, substrate. Bioballs aren't as important as in a FO tank.

For well planted, reasonably loaded fish tanks, filters are there for circulation and mechanical filtration only.
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