I'm looking to add a small clean up crew to my 40 gal SW
tank. Right now I've got 40lbs of LR
, 2 Perc Clowns, a 4 assorted Damsels. I was thinking of a couple of emerald crabs but I'm not sure what effect they will have on my existing fish and future, long ways down the road, coral? How large will they get and what problems can I anticipate with them. Any other clean up critters that anyone can suggest?