we had 2 but one died after molting. i don't think he handled teh stress from that well.
we have a glass tank that has about 2 or 3 inches of sand in it. one side has one of the little heat pads made for aquariums. gives him a warm side and a cool side of the tank. you need to change the sand every 3 or 6 months, i can't remember which right now. i also scoop it out like a little box, when i notice hermie poo. we've had problems with mites when i put in the coconut bedding, a half coconut shell for a house, and when we had wood climbing things for him to climb on. now i just use the calci-sand and plastic things for him to climb on.i also freeze the container of food like you do flour to make sure there's nothing in that.
once a week i clean teh food and water shells (more often if needed) and his salt water pool. before he molted, he got a bath on sunday. haven't given him one in a while because of molting. mostly it's just so i can see if he's doing ok and to check for mites. i spray him with water or put a little water in a dish and put him in. he seems to like it because he'll come out of his shell a bit while i spray him.
use the water conditioner since cholrine in tap water is bad for them. after i scrub everything i rinse it with the treated water.
as far as changing shells, when we first got hermie and we bought him extra shells, i swear he changed shells for times in one day. trying on differetn shells then finally picking one. he's on his 3rd shell now. it's not much bigger than his second one, but he seems to like it better.
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