Tropical Test GH/KH

An easy to use test for general and carbonate hardness in your pond or aquarium. 

• Includes test tube, testing station and two bottles of reagent solution
• Simply fill the test tube to the desired line then add drops of reagent until the colour changes

Whilst many species of fish and aquatic animals will tolerate a range of hardeness in their environment, but for some, specific levels are essential to good health. Higher levels of hardeness will also stabalise pH, which can make changing pH levels harder for some types of blackwater setups.