Using an Airmax Pond Logic carbonate hardness test prior to applying certain algaecides and herbicides in your pond is recommended. Water hardness greater than 50ppm helps fish that are sensitive to chemical treatments. Harder water assists your pond in controlling varying pH levels and will prevent heavy metal impurities from killing your fish. In addition, harder water usually breeds higher alkalinity levels that will absorb acidic pond content without changing pH, thus keeping your fish safe. This test strip is simple to use and will work in just a matter of minutes.

How To Use
Dip into the water sample for 3 seconds. Remove from the water and do not shake. Wait 20 seconds and match the color in the packet to the color block on the other side of the packet. Colors are stable for 1 minute.