they molt but usally eat their molt, so seeing it is pretty hard... which almost makes you think they just grow....as far a small hides??? we have to remember many tropical pedes like surface area, rather then cramped quarters. all of mine move about their set-ups at night, soo imo i accommodate that natural instinct.....for temporary set-ups yes but for larger pedes(for me anyways)i'd still go 10 gal...i've gotten eggs and have yet to have a pede die on me...