inhabitants are: 2 blue/green chromis, lawnmower blenny, niger trigger, 1 male 2 female lyretail anthias, royal gramma, 3 banghai cardinals, diamond watchman, gold stripe maroon clown that I might like to keep. The rest need a new home. Whatever I go with it will be live rock and no sand. I plan to have mushrooms softies and some macros. The plants in my 17g biocube are going bananas. I'll be able to transplant some of those. I can keep my LED light and get a 70 or a 55 and just go sumpless. i met a guy that just used a HOB filter as an ATS for his. That coupled with a canister filter are the only ideas I have so far.