API® GH & KH Test Kit - General and Carbonate Hardness Test Kit Aeration Pond Size 1 - 4 Acre For each of the three

For each of the three main applications (Spring Prep

magnesium and other trace elements for improved bone and scale growth of Koi and Goldfish

Cold winters make it difficult to mix the DB in pond water

Angle bracket

Available in 1 cubic foot box

API® GH & KH Test Kit - General and Carbonate Hardness Test Kit Aeration Pond Size 1 - 4 Acre For each of the threeKeep your fish healthy and thriving by testing your aquarium water's GH levels regularly with this easy to use API GH & KH TEST KIT for freshwater aquariums. Testing water parameters weekly helps prevent invisible water problems that can be harmful to fish. Water hardness is a measure of the dissolved mineral content of water. Contains one (1) API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, including 2 bottles of testing solution and 2 test