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darkred
Guest
what exactly is one. how would i make one, and then apply it to my set up. I have a 55 with sump inderneath. how would all this work together. i already have large population of copipods, see them all over, in the tank and in overflow box, and in sump. but i hear refigium also helps with lowering nitrates, and just is good to have in addition with everything else.