HCA: Hermit Crab Association

thank you all for the help. sadly, he didn't make it.

please respond, I don't want to lose my buddy

1. What kind of substrate is used in your tank and how deep is it? a mix of Eco earth and calcium sand 2. Do you have gauges in the tank to measure temperature and humidity? If so, where are they located and what temperature and humidity do they usually read? no 3. Is a heat source used in the tank?...