At Humboldt Nutrients we don’t currently manufacture conventional chemical pH up or pH down products, but several of our leading products are useful for raising or lowering the pH level of your garden.
Always ensure that you are monitoring of your pH level as often as you can. In hydroponic methods the pH range can change very rapidly unlike when you grow in soil. You will notice the changes in your plants quickly as well.
In a normal hydroponic system, keep the pH between 5.5 and 5.9.
Always maintain a pH level of 6 to 7.0 in an organic mixture.
S.I can be used as a pH up alternative. Your plants will benefit from additional Potassium Silicate. The typical pH buffer solution ( Potassium Hydroxide and Potassium Carbonate) can add elements to your mixture that are not beneficial to your plants.
FlavorFul is a natural pH down alternative for Organic growers instead of the typical Phosphoric acid solution.