GH and KH Hardness Test Kit

Tests tap water and freshwater aquariums for general hardness (GH), the measure of dissolved calcium and magnesium ion concentrations. Also test carbonate hardness (KH) in tap water, freshwater, or saltwater aquariums, which is the measure of dissolved carbonate and bicarbonate ion concentrations.

Helps prevent fish stress caused by rapid pH shifts, the result of low levels of KH. Helps duplicate the natural habitat of your fish, thereby providing a healthful aquarium environment.