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Thread: Best bio media
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post #10 of (permalink) Old 11-17-2020, 04:37 AM
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Originally Posted by en7jos View Post
So is that just a foam in there then @Deanna?
Nope. All of the BB is in the substrate or on the surfaces throughout the tank and supporting systems. The only media in the canister is some filter floss for mechanical filtration, and that is discarded every week or so.
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