- Suitable forfor 2500 litres of water
- Suitable forfor 5000 litres of water
- Suitable forfor 10.000 litres of water
- Suitable forfor 37.500 litres of water
- Suitable forfor 150.000 litres of water
- Suitable forfor 75.000 litres of water
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GH Plus easily increases the general hardness of the pond water. This stimulates the growth of oxygen plants and the development of micro-organisms. A good GH-value prevents acidification of the pond.
Soft pond water, having a GH value (= calcium and magnesium, also referred to as general hardness, expressed in DH) lower than GH 7 °DH can easily become acid. Continuous rainfall will intensify this process. Especially in autumn and winter this can result in death of fish. Also the growth and development of oxygen producing plants will be inhibited at a too low GH value.
A healthy and stable pond environment has a total hardness ranging from GH 8 to 12 °DH. Regular inspection (4 to 5 times a year) of the GH value is therefore desired. If the value will decrease below GH 7 °DH, measures have to be taken. With the help of Velda GH Plus the total hardness can be increased without any problem. Velda GH Plus is an environment-friendly product and absolutely harmless for pets, fish, insects and micro fauna.