Thought I'd share my trials and tribulations with my runoff ph.

Mother Plants: used to not worry about runoff as vegging plants have never exhibited any signs of distress. Until recently, I noticed burnt leaf tips awhile back. Flushed with Clearex and they came right back. That's mostly because she is rootbound. A week later I checked the runoff and it was still 5.8. Since then I've fed and watered with 7.0 and runoff is up to 6.2. So it seems to me that you can veg a plant and not worry so much about PH.

Vegging Plants: After 5 weeks vegging the runoff is 6.1 while input is 6.8. But again, no problems and they look great.

Flowering Plants: Here's where they go whacko. After 7 to 10 days in 12/12 new growth start showing burnt leaftips. And then within another couple weeks I see mg. def. that looks like lockout. The runoff ph was 5.8. Soooo, I've been giving them 7.0 solution and got it up to 6.0. So Monday night I got impatient and fed with 8.0 water. Runoff came up to 6.4. Plants did not react to 8.0ph solution I gave them. Thankfully, as I was scared to death to give the girls solution that high.

I'm using PROMIX HP. From what I'm seeing it would appear that this brand of medium needs more buffeting. OR- perhaps us hand waterers should be feeding with a more alkaline solution. I see two solutions and would like any feedback from others that have dealt with this problem.

1. Add dolomite lime to promix before using(supposed to have some in it). or

2. Feed and water with 7.0 or higher.

What do you think?
grey1223 Reviewed by grey1223 on . PH Problems Thought I'd share my trials and tribulations with my runoff ph. Mother Plants: used to not worry about runoff as vegging plants have never exhibited any signs of distress. Until recently, I noticed burnt leaf tips awhile back. Flushed with Clearex and they came right back. That's mostly because she is rootbound. A week later I checked the runoff and it was still 5.8. Since then I've fed and watered with 7.0 and runoff is up to 6.2. So it seems to me that you can veg a plant and not Rating: 5