I do have a amiracle sump but do not have alot of room with my rio 2500 as return punmp. I am looking into the use of a refugium as a replacement for a skimmer. I was planning on getting a small tank drilled close to the top with a return and a input hole feed buy a powerhead. I was looking into what to put in but not sure yet, interested in mangroves and calurpra. The substraight, not sure what to use Mud or DSB? Any input would be great. Thanks Marcus.
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