The Planted Tank Forum - View Single Post - Co2 diffusion??? DIY
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Old 11-08-2012, 07:38 PM   #2
c_gwinner
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People have done and do this, but it is hard on the impeller is what I hear. Maybe an airstone would work.

Sorry didnt read the HOB filter part.
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Last edited by c_gwinner; 11-08-2012 at 07:42 PM.. Reason: Not reading HOB on original post
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