rusty is right PH down is way better but when you cant wait or cant find it ( waiting for mine in da mail ) till then im using vinegar and it worked fine. i took a cap size full of vinegar and i had to dilute a couple times because the vinegar is so powerfull so make sure you pay attention to what level u have it on.
massbud Reviewed by massbud on . Need advice:Trying to adjust SOIL PH level Soil Ph level at 7-7.5 tested.I know that's high for soil. Using 3 gallon pots, Into 3rd week of grow and leaves turning yellow. Which is what told me to check PH.Anyhow added 2 tps. of Sulfur granuals (as per package directions) to each pot, mixing in to soil. Can anyone PLEASE tell me how long it will take to see results. Rating: 5