PH+ and PH- are concentrated agents to reduce, or to increase, the acidity of the nutrient solution. With the right degree of PH the plants are able to absorb the maximum amount of nutrients contained in the watering. For PH adjusters during the growth period, use the PH+/-Grow adjuster during the bloom period the PH+/- Bloom adjuster.

First, measure the PH of the prepared nutrient solution. If needed, add the specified adjuster gradually into the nutrient solution. Mix carefully and check the change in the pH level. Continue by adding needed amounts of the adjuster until reaching the desired PH level. Make certain you stir the nutrient solution carefully after each adding, and before measuring.

• To decrease the PH during growth period use the PH- adjuster.