Find Reviews and Compare Prices for:       All ProductsTest Kits     4.3 (5)   Add a review API Carbonate Hardness Test Kit   Aquarium Pharmaceuticals Test Kits KH/Carbonate Test Kit by Aquarium Pharmaceuticals API. Tests aquarium water for carbonate hardness KH or calcium. Each test kit includes reagents, glass test tube with cap,... Have a question? Just Ask! Member Reviews Compare Prices Product Spec Send to a friend Category Aquarium Pharmaceuticals APIElosHagenInstant OceanLaMottePentair AquaticsPondCareRed SeaSalifertSeaChemSeraTetratestTropic MarinTunze--------Suggest a new option Something wrong in this page? Let us know! Related products: More Aquarium Pharmaceuticals Test Kits Other Test Kits internal use: spec399