Razorwitz Posted May 4, 2021 Share Posted May 4, 2021 I'm in the process of putting together a JBJ 20RL rimless all in one.. It came with this bag of ceramic rings for biological filtration.. Should I use these, or should I just break up some of this dry rock to put in the bottom as rubble? Use some of both? Any suggestions on what else to do for filtration in this tank? I was originally planning on putting some chaeto in the middle chamber, but I'm starting to re-think that. Quote Link to comment
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