Ok....lets start from the beginning....aren't you thrilled? I remember you saying it was jumping all over .......

Can you do your specs for me including ppm? Medium...hydroton? Is it dropping or raising....and is pretty much the same trend (always lower? or always higher?)
Ph consistently dropping usually means some sort of roots rotting or dying......ph consistently too high could be nute burn or even normal depending on where the plant is in flowering (late flowering plant's ph can rise about 1 point a day around my house....)

Give me all the info you can.
Weedhound Reviewed by Weedhound on . The PH battle I am almost nearing the end of my first grow, last night I couldnā??t sleep thinking do I want to do this again? Well NO, but no one should expect perfection so Ill give it another try. . . I have battled low PH from day 1. If I set it at 6.5, in 24 hours its under 6.0. Double check by using the meter and the drops it plunges. So I used the entire bottle of PH UP in just over 9 weeks and I opted 3 nights ago to use Baking Soda to raise the PH. Using warm water and baking soda, Rating: 5