water changes

is it easier to take care of a hermit or a snail? how often do hermits need new shells? i saw this crab at the pet store a while ago i dont know what it was called, but maybe someone can help me. it has a real small body with long needle thin legs....
 
sharpie
I would get a variety of snails and red reef or left handed hermits. You can usually buy shells at your lfs . The crabs get about an inch to an inch and a half wide.
hth
 
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