Renfro
Well-Known Member
Medium pH Correction (Soil and Coco)
Checking and adjusting the pH of your root zone in soil or coco is a very important part of growing healthy plants. Often you will notice nutrient deficiencies despite the fact you know you have provided an ample feed at an appropriate pH level. When this happens it’s generally either...
www.rollitup.org
That thread details the process of making do. You will need to know where it's sitting at so a good soil pH meter (not those crap analog ones) will be required or you are just guessing. You will have to fight it until chop and unless you know where it's sitting you will just be guessing.
The indicator I saw was the stripey burn pattern. Every time I have seen that symptom I check the soil pH and it's low, like lower 5's or even 4's. If you are really low then you will want to do a few hard corrections with a pretty high pH and then you will need to keep on it with lesser corrections.
If targeting 6.5 - 6.8 (you should be) you may end up having to water at 7.5 ish all the time after the hard correction. Knowing whats going on in the soil pH wise is critical or don't even bother. It will swing between feeds, so lets say you are at 4.5 and you wanna be at 6.5 you might feed at 8.5 and check the pH every few hours until next feed and watch it drift down. It's a lot of work but you can pull off an excellent crop (save a crop) and next time find a medium that has a more agreeable pH. I like to take my pH meter and stick the bale before I buy it and see whats up. So very many problems I have had with inconsistent pH from suppliers like Sunshine, Promix, Berger... I am still hunting for a good peat based mix that is actually consistently in the 6's pH wise.
Hope that info helps you in your quest. Happy growing!