I got nass. snails!


I have a 2 -3 inch in some area LS floor bottom (just switched from CC) and I was woundering how many Nas. Snails I should buy?? I just bought 4 today and I know its not enough. I have an 80 gal. tank. I also purchased 2 emerald crabs, and 4 blue leg hermit crabs. I want to get a coral banded shrimp also but LFS didn't have any today.... SO... numbers anyone?