Flukers Saltwater Concentrate/Water Conditioner for Hermit Crabs, 2-Ounce (3 Pack) 3 Pack of Flukers Saltwater Concentrate/Water Conditioner for Hermit Crabs, 2-Ounce Each Directions: Add one teaspoon of conditioner to each cup (8 fluid oz.) of water Measure amount of water in your crab's water dish and adjust dosage/amount accordingly Use every time water is changed