Question on Clean Up Crew

You shouldn't need to worry about feeding your cuc if you don't overstock them. I avoid all crabs in my dt now. They are all opportunistic and eventually have started taking out my snails adding to my algae problem. If you do go with them get some larger empty shells for them to move into as they grow. There is the thought that once they get the taste for snails they start to go to town on them. Having some extra shells in the tank will give them an option other than your snails for larger homes.