API CARBONATE HARDNESS TEST KIT
Aquarium Water Test Kit, including 1 bottle of testing solution, 1 color card and 1 glass test tube with cap
Helps monitor water quality and prevent invisible water problems that can be harmful to fish and plants and cause fish loss
Accurately measures carbonate hardness in freshwater and saltwater aquariums KH (Carbonate Hardness) stabilizes aquarium pH. Use weekly for monitoring and when water or fish problems appear