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what should be used as a bio filter? The copper solution will kill anything on live rock.
Suggestions?
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Right now in my Q-tank (20 gallons) I have an aquaclear 200 and a powerhead for added circulation. I have carbon in the filter but I'm not using copper. I went to Wai's and bought a few pounds of LR rubble for bio filtration. At such a low salinity (10ppt) I imaging the bacteria in the LR will die off somewhat, but then, it will end up in my sump afterwards anyway.