I have a 10 g nano tank. 17 lbs LR, 3 1/2 sand bed (Carib Sea Seaflor), 5 astreas, 4 bumblebees, 5 scarlet hermits, 1 peppermint shrimp, 1 ocellaris clown, various zoanthids and poylps, and a serpent star. So far, it's doing great. The way I set mine up was to build a HOB filter/refugium from...