What should I included in my cleaner crew? What are the most important creatures I should have. Do I need to have crabs? If so which are the best? Will they crawl out of the tank?
I think a bunch of snails are good, if you can get a few different kinds that is great too.
Hermit crabs are ok, be sure you get the kind that stay small, like blue legs, but I don't use hermits anymore, as they tend to kill my snails. I have never had one climb out of the tank.
