Most hermit crabs require a salt bath to thrive and maintain their health. Contains extra calcium for exoskeleton strength and to assist in molting. A salt bath should be placed in all hermit crab tanks, providing a source for their salt requirements. Directions: Add one teaspoon of salt to one cup of dechlorinated water, stir until dissolved. Place saltwater in enclosure. An additional source of freshwater is required in the enclosure. Pack of 2