The pH Perfect base nutrient has some specific ingredients( chelates, surfactants, amino acids as well as buffers) that increase the pH spectrum to continue the plants ability to absorb nutrients between 4.0 and 8.0 pH without the concern of having to re-adjust the pH so many times, like you would have to with a simple salt formula. You should use a water supply Tap water )providing the ppm value is no more than 150 ppm otherwise you may want to consider using RO water ( which normally has a 0 ppm level.) As far as adjusting pH it is not necessary, the additives will do the work for you. If you have any other questions or concerns please call our Growers Support line at 800-640-9605 as we will be happy to help in any way possible.
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Growers Support