API 5 in 1 Test Strips, 25 Count
Quickly and easily test Nitrate, Nitrite, GH, KH and pH all in one strip at home!
From the manufacturer:
API® 5-IN-1 TEST STRIPS are the quick and easy way to test the 5 most important aquarium water parameters – pH, KH, GH, nitrate, and nitrite – in one easy step. Simply dip one test strip directly into the aquarium, and compare the colors on the strip to the color card provided to 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.
Full instructions included in each testing kit for all tests. Use with other test kits to confirm and gain more insight into your aquarium's water chemistry!