no salt is needed for these crabs. they are a fresh water terrestrial crab and will spend most time out of water. most of the time people give salt to replace lost minerals from reverse osmosis filtering. hard mineral rich water with no chlorine is prefered. bottled spring water is fine. high ph is fine. iodine/iodide for salt water aquariums will help the molt and is needed. 2 drops per 5 gallons of water, every other day.. i also put travertine rocks in the water and even on land. humidity 90-100%. molting is very stressful and they need places to hide. they like to burrow also.

as mentioned above calcium is important. i mix mine in with thawed blood worms and the crabs love it. another thing is repashy shrimp souffle which is nicely balanced and readily eaten by the crabs.

http://www.panzerwelten.de/forum/showthread.php?tid=711

FAQs on Freshwater Crab Compatibility