OceanSix Shrimp Mineral GH/KH+ is specially formulated to remineralize water for shrimp and crustacean care, raising GH and KH for optimal conditions. It contains trace elements to support shrimp molting and overall health in freshwater aquariums. Directions: Add 5ml (1 capful) of Shrimp Minerals to every 10 of water used for a water change or new tank setup. Adding 5ml to 10 will raise the GH by 3 dH and KH by 1.5 dKH