API Test Strips 25pk

The API 5in1 test contains 25 test strips for the determination of pH, general hardness(GH), carbonate hardness (KH), nitrite (NO2) and nitrate (NO3). Includes easy to follow instructions and information on how to correct unsafe water conditions.
A quick and easy way to check your water quality, takes just 60 seconds to test all 5 parameters in fresh or salt water.