Ohad Posted February 11 Share Posted February 11 I wish I had a set with these fancy lily pipes. But I got a HOB. The internet does not give me a straight answer. Right now, the CO2 is on the side of the filter close to it; this is based on a video I saw from "the secret history in your aquarium." But the internet is all over with that. Can CO2 and HoB filters work together, or is it a waste of time? If so, what is the best way? Link to comment Share on other sites More sharing options...
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