GH Plus to increase the GH value of pond waterFor higher water hardness. When the GH value of the pond water is too low, the pH value and the KH value will also fluctuate. This can cause fish diseases and algae growth, among other things. The optimal GH value is between 8 and 12. This also ensures optimal plant growth. If the value falls below 8 GH, then GH Plus increases it quickly and without clouding the water. It is safe for humans and animals. Use 25 ml of GH Plus to increase 900 litres of