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Hermit crab shell replacement?

dashi03

AC Members
I just got a 20gal tank from a friend, including some red legged hermit crabs. Do I need to provide larger shells for it now or in the future? I've attached a not so great pic, the hermit crabs are about 1-1.5 cm with the shell. It seems like it might grow out of it soon?

image.jpg
 

tanker

Josh Holloway--Be mine!!!
You will eventually, but it is up to you. If there are not anything in the tank to bother the redlegs, wait till the shell looks too small, them add some.
 

TL1000RSquid

AC Members
I usually keep a few extras around for them to swap if they want and hopfully keep them from attacking snails for theirs. Dwarf's dont usually bother them though. Reef Cleaners sell shells cheap if you're looking for some.
 
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