The Bonsanto hydro-concentrate kit for the nutrient solution does not necessarily require a pH measurement, as our nutrient solutions X & Y have been developed accordingly. However, to be on the safe side, we recommend two to three tests during the course of your cultivation, especially at the beginning when you mix your nutrient solution for the first time. Ideally, the pH value of your nutrient solution should be between 5.5 and 6.5 when you first mix it.
If the pH value based on your tap water is above 6.5, mix 1.2 to 1.5 ml of neutral pH into your nutrient solution instead of 1 ml.
If your tap water with X & Y concentrate has a pH value of less than 5.5, add a little less neutral pH to your nutrient solution. So instead of 1 ml, add 0.7 or 0.8 ml.