Velda GH+ 250 ml 121951
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Velda GH+ 250 ml
Maintaining the water hardness (GH value) is extremely important for a stable pond environment and good plant growth. All the more so because biological processes in the pond continuously reduce this hardness. The GH value is expressed in German degrees of hardness (DH). Correct hardness fluctuates between 8 and 12 ° DH.
Velda GH Plus is a very effective means to increase the total hardness of the pond water. This hardness is mainly formed by the calcium and magnesium sulphates. Important minerals that ensure that the environment remains stable, the aquatic plants grow and the soil bacteria can develop. At a joint hardness of at least 8 to 12 ° DH, oxygenating plants and micro-organisms can develop well.