Description
Test for the measurement of GH – Total hardness test
All natural waters contain calcium and magnesium salts in dissolved form. These substances contribute to forming the hardness of the water. Total hardness is a unit of measurement that serves to indicate the sum of the calcium and magnesium ions dissolved in the water. Water with a low content of calcium and magnesium salts is called soft; if it contains a high percentage, it is instead defined as hard. The degree of water hardness is important for both fish and aquatic plants. A GH value similar to that of their original waters will be optimal for fish and plants and is an important prerequisite for their well-being. This is why it is good to constantly monitor the total hardness value in the aquarium.
In the freshwater aquarium it should oscillate between 3 ° and 16 ° dGH (German degrees of carbonate), with an optimal range between 4 ° and 10 ° dGH.
APPLICATION: Freshwater aquarium