I recently bought 3 pp for my daughter(o.k...me!) Once I got them home I decided I needed to expand. I ran across a 59 gal. tank for a bargain. Bigger tank, more room for crabbies, right!!?? I fixed the tank up, Bought 5 more pp, sm/med in size. I lost the smallest one. The first couple of nights in the new crabitat they partied all night. They eat changed shells,etc. Now they have all dug a tunnel under the drift wood that is in the bottom of the tank and hardly ever come out. Is something wrong? Do I need more humidity or heat? I had hermits when I was young and i don't remember them doing this. Help anybody!?