HCA: Hermit Crab Association

My crab (Legs) has lived in a small cage most of his life, so when I got him I wanted to change his habitat and I have a few questions. Legs has molted 2-3 times in his current cage. If I move him into another cage does he risk getting PPS? Also, is using sand instead of dirt fine? Thank you!

Thank you everyone!

My younger sister bought a crab named Legs (Purple Pincher) and eventually surrendered him to me (he is past PPS). He lives in my room with one of those crappy PetCo cages with mesh wiring surrounding it. Thats how he lived for a few months, until I discovered this forum and realized this isnt how a...