Help keep your fish healthy and thriving by testing your aquarium water regularly with API's easy-to-use 5 in 1 Aquarium Test Strips. Poor water quality can cause fish stress, illness and can even lead to fish loss. API's 5 in 1 Aquarium Test Strips measure five of the most important aquarium factors including pH, nitrite, nitrate, carbonate and general hardness. Just dip a strip directly into your freshwater or saltwater aquarium and use the color-coded chart to determine if your water is safe, or if adjustments are needed. Then follow the recommendations to treat the water—it’s that simple!
Tests five key water parameters—pH, nitrite, nitrate, carbonate and general hardness.
Highly accurate color charts provide precise test results, identifying problems in your aquarium.
Chart colors are distinctive, making test results easy to read.
Recommendations help troubleshoot aquarium issues.
Superior moisture protection packaging ensures testing accuracy.