When you first notice an issue in your planted aquarium, one of the first and most helpful steps you should take is water testing. The API FRESHWATER MASTER TEST KIT measures the key indicators of aquarium health: pH, Ammonia, Nitrite, and Nitrate. This highly accurate, economical, and easy-to-use kit performs over 800 tests, and includes precise color charts and information on how to correct unsafe water conditions. For planted saltwater aquariums, try API SALTWATER MASTER TEST KIT, which performs over 550 tests with high range pH, ammonia, nitrite, and nitrate test reagents. Any unsafe water conditions can stress the fish and may prevent the fish from healing (or cause problems for your plants), so it is essential to correct any water problems before additional treatment.
Another option for efficient water testing is API 5-IN-1 TEST STRIPS, which work quickly and easily to measure 5 key water parameters: pH, Nitrite, Nitrate, Carbonate Hardness, and General Hardness. This kit comes with information on how to correct unsafe water conditions, and contains highly precise color charts for easy comparison to test results.