For a balanced nutrition and potting soil, two things are essential, namely EC and pH values. Plants prefer high quality water in order to flourish. For good quality water, the amount of calcium plays an important part. Water with a relatively high amount of calcium and magnesium ions, we call ‘hard water’. Hard water can harm plants that prefer an acid environment.
Consuming water

EC-values are the values for the electric conductance of water. If the salinity of water is high, the EC-number will be high too. The salt concentration inside the plant always needs to be higher than outside, because water moves from low to high salinity and therefore in the direction of the plant.
Stable values

We express the acidity of water in a pH-value. It presents the concentration of ions in the water. The lower the pH-value, the higher the acidity of the water will be. Soil with a pH-value of seven is neutral, below seven is acid and above is alkaline. For most potting plants a pH-value between 5.5 and 6.0 is desirable. Still, it is more important that the value does not fluctuate but remains stable. If the pH-value fluctuates, than the amount of nutritious substances fluctuates as well and this will show in the way the plant grows.
pH-value 5.5 - 6.0

The ideal pH-value of a watergift for decorative plants is between 5.5 and 6.0. The product PH- can help your plants to reach this ideal value and to keep them balanced at this level.