API 5-IN-1 Test Strips 25 Count

API® 5-in-1 test strips are the quick and easy way to test 5 of the most important aquarium water parameters - pH, KH (carbonate hardness), GH (general hardness), nitrate, and nitrite - in one easy step.

All you have to do is dip one test strip directly into the aquarium, and compare the colors on the strip with the included color card to help prevent hidden water problems that could be harmful to fish.

Each kit includes detailed information on how to interpret test results and correct unsafe water conditions.

Size: 25 pieces per box