Hygger 8 in 1 Aquarium Water Test kit strips can be used at freshwater & saltwater aquariums and ponds. Compared to liquid test kit, these testing pads are faster to results, less messy, one strip tests for 8 water parameters at one time. Hygger 8-IN-1 test strips test for pH level, Hardness, Ammonia nitrogen, Nitrates, Nitrites, Total Chlorine, Carbonate Root and Total Alkalinity. Constantly monitor water parameters, provides good water quality for your healthy fish.