The best pH for a nutrient solution when growing plants hydroponically are between 5.8 up to 6.2.
This is a very caustic liquid and should be handled with extreme care. Once again our product, at 50%, is stronger than some competing products. Always check the label for best value.
PH UP contains potassium hydroxide (KOH).
P.H. up is used to raise the P.H level of your nutrient solution.