API 5 in 1 Test Strips 4 Pack

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API 5 in 1 Test Strips 4 Pack Pack Size: 4 Pack Tests: pH, KH, GH, nitrate, and nitrite Quick and easy way to test the 5 most important aquarium water parameters Simple one dip and test all levels in one reading Help prevent invisible water problems that can be harmful to fish Each kit includes detailed information on how to interpret the test results and correct unsafe water conditions. Show more