Keep your pond environment at a good level
For a stable pond environment and good plant growth, it is essential to keep the general hardness (GH value) of the water at a suitable level. The GH value is expressed in the German degree of hardness (DH) and a favourable value is between 8° and 12° DH. Organic processes in the pond constantly reduce the hardness of the water. GH Plus quickly increases hardness without making the water turbid. Contents 250 ml, sufficient for 2,500 litres of water.