So the wife and I pulled the trigger on an Aquatop 40 AIO cube today to upgrade our IM 20. Would have gone bigger but money and space is not available for now. Anyway I will be using the AI PRIME HD from the other tank along with my Ice Cap ATO plan on ordering the Ice Cap gyre 1k for the power head. 40lbs of rock 15-20 lbs of sand. Have some media from the other up and running tank plus water from it to speed the cycle along. Will be doing a mixed reef with mostly LPS and Euphyllia. Hopefully it will be ready to go by the time we go to REEFDREAMS next month.