The manufacturer GHE is carrying out projects together with the NASA. So the quality of its products are accordantly high.
A pH regulator for cultivating plants has to be dependable. Plants under artificial light need a certain pH value in their water for the best possible ingestion.
In case the pH value of your irrigation water is too low, GHE pH Up can lift it up, when you add it to the nutrient solution.
The current pH value of the solution can be found out by using a pH-meter by HANNA e.g.