Tropic Marin Kh/Alkalinity Test Kit Saltwater

The carbonate hardness (KH) or alkalinity of a water sample characterizes the buffering capacity, i.e. the ability to maintain the pH value of the water. There are many terms in water chemistry to describe the buffering capacity with varying definitions. The term “carbonate hardness” is customary in fishkeeping; however, it is the alkalinity which is measured. In this test, both terms are used synonymously. The reading for alkalinity is usually given in degrees of German hardness (°dH). You can find a table for converting this unit into other common units in these instructions. The alkalinity should be tested in all aquariums with great regularity. If the alkalinity in the aquarium is too low, the pH value can sink (sudden drop in acidity) to a level which is life-threatening for many fish and invertebrates. In reef aquariums, an adequate alkalinity level is essential for strong coral growth. On the other hand, an overly high alkalinity in saltwater tanks can lead to calcium carbonate precipitates and also have a negative impact on coral growth. The alkalinity in saltwater aquariums should range from 6 to 9 °dH. The alkalinity in freshwater aquariums should not fall below 3 °dH. The optimum alkalinity level in freshwater aquariums depends on the species of fish and plants you are looking after. Ask your specialist retailer for the correct alkalinity level for your aquarium.

• Test set for precise checking of the most important water values in the saltwater aquarium in a handy and stable case
• The individual tests and their accessories are well sorted and labelled in the case so that there can be no confusion
• Refill packs can be purchased for used tests, so that nothing stands in the way of a long use