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Product code: T28370
Brand: TROPIC MARIN
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KH PRO
The carbonate hardness (KH) or alkalinity* of a water sample characterizes the buffer capacity, i.e. the ability to maintain the pH value of the water. It is essentially determined by the proportion of hydrogen carbonate ions in the water. As the pH value increases, other basic ions, such as hydroxide ions, also contribute to the alkalinity.
The alkalinity should be checked in all aquariums very regularly. If the alkalinity in the aquarium is too low, a potentially fatal drop in the pH value can occur for many fish and invertebrates. In reef aquariums, there is sufficient alkalinity for vigorous coral growth. On the other hand, excessive alkalinity in saltwater tanks can lead to calcium carbonate precipitation and also have a negative effect on coral growth.
*In water chemistry, there are various terms for describing buffer capacity with different definitions. In aquarium science, the term “carbonate hardness” is used; However, the alkalinity is measured. In this test, both terms are used synonymously.
Alkalinity is usually given in German degrees of hardness (°dH). A table for conversion into other commonly used units (such as the equivalent unit millival per liter (mval/l) or the amount of substance in mmol/l) can be found in the instructions for use. In the ocean, the alkalinity is 6.5 °dH. In a saltwater aquarium, the alkalinity should be between 6 and 9 °dH. In freshwater aquariums, the alkalinity should not fall below 3 °dH. The optimum alkalinity value in a freshwater aquarium depends on the fish and plant species present. Ask your specialist dealer for the right alkalinity for your tank.
The Tropic Marin® KH / Alkalinity-Test Professional is a high-resolution test kit for determining alkalinity with a resolution of up to 0.1 ° dH by titration; including a conversion table to other units. Easily recognizable color change from turquoise blue to pink.
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