I am also looking to add a clean up crew to my tank. Most of the ones offered have 20 of this and 20 of that. It seems a bit much for my 44 gal pentagon tank. However, I am not the expert. Any suggestions?
you don't have to buy in big numbers. If you get the u-build it package (if your ordering from swf.com) you can get want you want and how many of each you want. 10 snails, 10 hermits, a star, a few shrimp, maybe a crab or whatever will go with your tank and get along. If you buy from your lfs you can buy as little or as many as you want. 20 snails or 20 hermits are not that much once they get into the tank.