I have on my 20gal high tank, a skilter 250 (not being used as a protein skimmer), a biowheel 125, ~20lbs LR and a 3" LSB, I have only one domino damsel, some blue legs, snail turbo and astrea, a red serpent star, a CBS, 2 peppermint shrimp, 2 emerald crabs, a condy anemone that the damsel...