API Test Strips 5 in 1

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 colours on the strip to the colour 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.. Instructions. Please click here for instruction manual. Colour Chart. FAQ. How do API 5-IN-1 TEST STRIPS work?. Test strips are a fast and easy way to test your aquarium water parameters! Simply dip a strip into your water and swirl two times, then remove the strip and hold flat to evaluate colour changes. Compare these colours to the colour chart included with API 5-IN-1 TEST STRIPS, and treat your water accordingly.. How accurate are API 5-IN-1 TEST STRIPS?. API 5-IN-1 TEST STRIPS are highly accurate in measuring water parameters when used as directed.