Maintain ideal GH (general hardness) levels necessary for freshwater ornamental shrimp. Fluval Shrimp Mineral Supplement provides beneficial minerals to optimize aquarium conditions for shrimp. Liquid electrolyte-based solution contains calcium, magnesium, potassium, and sodium with a 3 to 1 calcium/magnesium ratio. Establish water chemistry similar to natural conditions from which many freshwater Caridina shrimps originate. Ideal for maintaining GH levels without impacting carbonate hardness levels. 4 oz bottle with a measuring cap for easy dosing in 5 ml increments.