HCA: Hermit Crab Association

How many hermit crabs can I put in a 40 gallon tank?

http://www.hermitcrabassociation.com/ph ... hp?t=92541
All answers can be found in the link above.


In saying that, it depends on whether you upgrade again. You could house up to 8 small to medium PPs... but once they approach large, you probably be better off with a 75g. If this is going to be their permanent home, id stock with 2 to 4. The less you have, the longer you dont have to worry about upgrading.

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the main thing to think about is will the 40 gallon be there forever home? you could put many more teenies in but the second they are mediums they would need much more space. i know the recommendation is 5-10 gallons for every crab medium or smaller. i personally have five grabs in a 40 long. one teeny-small, one small-medium and roughly three larges. in a 40 gallon long but i am also planning an upgrade soon.