ph soil probes suck royally
can try but dont exactly trust
if you use atleast have a backup water test kit and check the runoff of the water

i just went through this situation
texas grass Reviewed by texas grass on . Checking PH for Soil Growing I did a test run with indoor growing about a year ago, except I used hydroponics, and decided it was too much work with all the timers and changing water and all that. So, recently, I have decided to take up on indoor growing, which is fairly new to me. I was wondering how to check the PH when growing soil, and, also, the best watering schedule (how much, when, etc.) that you all have used for best results. Rating: 5