Hi i recently upgraded my vampire crab tank to 10 gallon tank they seem to love it especially my male vampire crab he is normally seen crawling around and hidind in th dried coconut shell the female normally stays in the water but when no one is around she does climb out to feed and explore around the tank my tank is a 30:70ratio of water to land my question is can i put a small amount of aquarium salt in there and can i pick up the crab and let it crawl around my hand or will it stress it out?cant wait to see your repliesthanks