Colombo test KH

Test to precisely establish the parameter KH (carbonate hardness) in German degree.

Solution valid for fresh water or sea water.

Box for 25 tests.

A good carbonate hardness (KH) is an imperative condition to have clear pond water, healthy plants and fish and above all, a stable pH.

The KH indicates the concentration of dissolved carbonates in your pond. If this value is too low, the pH can fluctuate rapidly, which is very harmful to fish.