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Thread: Best bio media
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post #12 of (permalink) Old 11-17-2020, 02:12 PM
Planted Tank Obsessed
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Originally Posted by en7jos View Post
So my next question is then.... if the filter is pretty much just a "water mover", why not get rid of the filter completely and just have a in-tank water mover (wave maker)? That would simplify the setup a whole lot for an established tank wouldn't it? I guess the filter is still required for the mechanical 'polishing' (filter floss) even if all the important BB is in the tank?

Thanks all, really interesting to hear how others go about things, especially when it contradicts what I thought I knew!
I think that's certainly doable, but you would lose the mechanical polishing, as you noted. You also lose the additional water volume -- maybe not as big of a deal with a canister, but my sump adds about 8 gallons to the system water volume, which is nice. A sump or canister also allows you to remove equipment from the tank.

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