API COPPER TEST KIT for freshwater and saltwater

API COPPER TEST KIT allows for easy and accurate monitoring of copper levels from 0 to 4 ppm to maintain copper-based fish treatments at therapeutic levels. The kit measures both free and chelated copper in freshwater and saltwater aquariums.
Copper, when used to treat parasitic infections, should be monitored in aquariums. Copper levels should not be allowed to drop too low to ensure the effectiveness of the treatment, but neither should they increase to the point of harming the health of the fish. It is even possible that copper is present in your tap water.