I have been thnking about size for the nano. I already know I will be using T5 HO over it. I am thinking no longer than 24" and no higher than 16. I owuld like to go with a Low Iron glass (trying to finda reasonable price) tank or I guess acrylic again. I might try to stay with a standard foot print though for ease of buying a stand. I might do a hand on Deltec Skimmer (if I can find one cheap on RC) if not then it is a small sump and a little in sump skimmer for this tank.