All I know is I run mine 24/7 and was told to by my hydro guy which I take as close to gospel as the bible.
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