Api Copper Cu+ Freshwater & Saltwater Aquarium Test Kit, 90 Count

The Api® Copper Test Kit Allows You To Easily And Accurately Monitor Copper Levels To Maintain Copper-Based Fish Treatments At Therapeutic Levels, And Tests Copper Levels From 0 To 4 Ppm. The Kit Measures Both Free And Chelated Copper, And Is For Use In Fresh And Saltwater Aquariums, Or With Ponds.