Hardness of water - one of the most important indicators of parameters of fresh water. The possibility of keeping of fishes, plants and microorganisms in an aquarium depends on it.
This indicator is measured in dH degrees. The rigidity is divided into the general GH and carbonate Book
Carbonate hardness of water - it is quantity of the dissolved carbonates of calcium and magnesium in water.
Practically any water contains carbonates which are the acidity buffer, preventing heavy jumps of an indicator rn.
Meets water in which the value of carbonate rigidity is caused by the maintenance of a carbonate of sodium or potassium. In such cases of KN can exceed GH values that brings into bewilderment of many aquarians. Therefore it is more correct to call KN by an alkalinity indicator. The optimum value of carbonate rigidity for an aquarium with plants lies in the range of KN 3-6. Over time water in an aquarium is acidified therefore the KN in old aquariums can be above stated. But for the same reasons it is better to avoid falling of KN to values less than 3, also in case of old aquariums rn can fall lower than 6.

Advantage of the Test Tetra KH on carbonate rigidity:

• suitable for all freshwater and sea aquariums
• convenient scale of the analysis
• stability and accuracy of definition

Bottle : 10 ml

Producer: Tetra, Tetra GmbH, Germany