API 5 in 1 Test Strips Test Strips for freshwater or saltwater aquariums!
The quick and accurate way to test for pH, Nitrite, Nitrate, General Hardness and Carbonate Hardness. Desiccant-lined tube, with snap-tight cap, provides maximum moisture protection for accurate results.
Highly precise color charts
Dip directly into aquarium – no separate vial needed
Includes information on how to correct unsafe water conditions