Dropping limbs

Bathe the hermit crab in luke warm water (77-80 degrees F, 25-27 degrees C) and leave the water in its shell when you take it out of the bath. Check the bath water for mites, and repeat baths with fresh water until all mites are gone if necessary. Increase the the humidity as much as possible by misting the sides of the tank and closing the tank, but for a tiny crack (you may need to use plastic wrap). Keep the tank between 70 and 85 degrees F, or between 21 and 29 degrees C. Hand feed crab occasionally in the evening and morning if the feeder and big pincher claws are both missing. Otherwise keep the crab relatively stress free. This is also the time to prevent the crab's tank mates from loosing limbs by upping the moister. Continue this treatment until the hermit crab has molted. If many limbs are lost, the crab will molt sooner than it was planning on, so nutrition is important as well as access to fresh and salt water( the crab will first grow small limb buds then molt). If the crab only lost one or a few limbs, then the limb buds will develop first to a small size and then pause. Once the limbs begin to grow again, the crab is just about to molt. If the crab lost the limb(s) as it was getting ready to molt, then it will molt before any limb buds form and they will grow back during the next molt. If the substrate goes bad because the tank humidity is so high, just replace it, but keep the crabs in a high humidity environment at all times