I've had my 20 tall set up now for 2 weeks now I got live rock and live sand in it and some shells from Florida we got from the beach a while ago in there the sand has some faint signs of brown stuff showing up there was tons of copods in there from the rock I can't see as many now but how much longer would you think till I can add a nem and some fish? I do t plan on having much in there a star a snail a nem and some fish

