HCA: Hermit Crab Association

Thank you karlys! That's very helpful, I appreciate your time! I completely understand what you're saying about unavoidable waste, I just wanted to minimize it as much as possible and give my PPs what they need. Is measuring the opening of a shell the standard way to measure a shell for hermit crabs?

Hi! I'm brand new to the forum and have had my first pair of PPs for about 2 weeks now. I want to provide them with appropriate shells in their tank but am unsure of what sizes I should put in the tank for them to peruse. Right now they're in the shells they had at the pet store which have openings ...