API 5-IN-1 TEST STRIPS 25 COUNT

API® 5-IN-1 Test Strips are a quick and easy way to test the 5 most important aquarium water parameters - pH, KH, GH, Nitrates, 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 Disorders that can be harmful to fish.