GH or general hardness of the water refers mainly to the quantity of calcium ions (Ca2+) and magnesium ions (Mg2+) present in the water.
The higher the GH value is, the higher the water hardness is. The lower the GH value is, the softer the water is.
GH values need to be adapted to those of the aquarium biotope.
When should GH+ be used ?
When GH values are not adapted to the aquarium biotope
How to use GH+ ?
One dose of GH+ increases the overall hardness of 100 liters (25 gal) of water by 3° GH. Close immediately after use. Keep out of reach of children.
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