clean up crew

I got a single turbo snail last Saturday and he has retracted into his shell. I thought this was normal because it was a new environment but he seems stuck and can't get out of his shell. I can see him trying but he can't "unfold" out of his shell. He has flipped over twice since I put him in...

I picked up my clean up crew on Saturday and everyone seems to be doing fine. It I noticed TWO snails at the top of the tank in hermit crab shells. They are alive and indeed snails. I don't know what type of snails they are but was wondering if snails ever change shells. I have a picture of one...

Good afternoon everyone. This is my first post on R2R as well as my first post on any forum... ever. I was wondering something about clean up crews. What is the rule when it comes to cleaning the substrate of a tank when a cleaner crew is in place. I am not wanting to come off as a slacker but I...