driel
Well-Known Member
How important is runoff pH?
I have 2 plants of the same strain in separate containers made from the same soil comprised of promix hp, 2 tbsp/gal dolomitic limestone, perlite, some sheep manure as top dressing and bone meal sprinkled under the roots before transplanting. I fed maxibloom at 6.5pH today and in one I was getting 5.1ph runoff while the other was coming out at 6. What is going on in the soil that's causing this difference?
I've been having a hard time finding information about runoff pH as some say it doesn't matter while others say to adjust feed pH to be higher than the ~6.5pH for soil/soilless so that runoff matches that range. Obviously both are dropping in pH and I'm guessing I need to add more limestone into the mixture to buffer the pH. I'm about day 15 into flower at this point so would a transplant be warranted?
I have 2 plants of the same strain in separate containers made from the same soil comprised of promix hp, 2 tbsp/gal dolomitic limestone, perlite, some sheep manure as top dressing and bone meal sprinkled under the roots before transplanting. I fed maxibloom at 6.5pH today and in one I was getting 5.1ph runoff while the other was coming out at 6. What is going on in the soil that's causing this difference?
I've been having a hard time finding information about runoff pH as some say it doesn't matter while others say to adjust feed pH to be higher than the ~6.5pH for soil/soilless so that runoff matches that range. Obviously both are dropping in pH and I'm guessing I need to add more limestone into the mixture to buffer the pH. I'm about day 15 into flower at this point so would a transplant be warranted?
