HCA: Hermit Crab Association

So I finally decided to check out a local aquarium store that has been in Knoxville for a long time but have never visited. So very cool! There are tons of fish, tank supplies, etc....even salt water hermits!! They are so cute & tiny & colorful!!!
Am thinking of upgrading my 15gal to a 20gal next week. What is a safe # of crabs to keep in a 20gal? I currently still have only the two.


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I was told four.

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Depends on the size of crabs... Most people prefer 5 gal per crab to allow room for growing.

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Thanks guys!!


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Giner13 wrote:Am thinking of upgrading my 15gal to a 20gal next week. What is a safe # of crabs to keep in a 20gal? I currently still have only the two.

Consider opting for either a 20L (6" longer than a 20g) or a 29g, same footprint as a 20L (30x12) but 6" taller, allowing for deeper substrate and more climbing stuff. I had 4 PPs (1 large, 2 medium, 1 small) in a 29g. If you're near a Petco, they have a $1-per-gallon tank sale going on until 1/28.

Crabinski wrote:

Giner13 wrote:Am thinking of upgrading my 15gal to a 20gal next week. What is a safe # of crabs to keep in a 20gal? I currently still have only the two.

Consider opting for either a 20L (6" longer than a 20g) or a 29g, same footprint as a 20L (30x12) but 6" taller, allowing for deeper substrate and more climbing stuff. I had 4 PPs (1 large, 2 medium, 1 small) in a 29g. If you're near a Petco, they have a $1-per-gallon tank sale going on until 1/28.

Awesome thanks!!!


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