So im having a problem with my plant and phosphorus. The progression of the deficiency seems to be pretty crazy. This all happened within under a week. Probably only 2-3 days!!! I flushed her last week do to concerns with to nutrient lockout and burn since I was not watering until run off. I gave her 8 gallons for 2.5 gallon pot. I bumped up nutes yesterday to a half dose instead of there usual quarter dose. I tested the soil pH and it was reading at a 6.9-7.0 which should be fine. Im once again testing by filling a shotglass halfway with soil and the then add water and let it sit for an hour or a little longer. My water ph is ok as well. I really dont know what to do and tired of just buying this and buying that and buy buy buy buy buy. Today I noticed the one leaf that was affected is getting a little worst so I assume the plant is still having deficiencies. Idk I'm less than 3 weeks away from the breeders chop down time. So I still got a little ways to go if I want to chop down at the soonest point. I cant see anything wrong with soil ph, water ph, just flushed last week so how could it be nutrient lockout. I only gave her nutes twice since last Tuesday. What could be the fucking issue!!!!
I want to be clear about something here. Because there's so much misinformation about soil pH.
Soil pH absolutely DOES matter and suggesting soil pH doesn't matter, is completely false. They're mislead. Sorry but it's the truth.
Soil pH matters much MORE than what your input does.
There is so much hydroponics vs soil psuedo science bs to do with cannabis.
I'll challenge people's idea about soil pH and say your input pH, is mostly meaningless in soil. It tells you nothing about your soil. Only your water input...
Remember soil has a very high water holding capacity (WHC) and cation exchange capacity. (CEC)
Both pH and EC are affected by both WHC and CEC.
Often the most neglected factor in a soil is ample aeration and drainage.
Now with that said about soil, compare soil to DTW Hydro, using an inert substrate and daily or multiple waterings / feeds per day.
Input pH is extremely important, correct? And waste / runoff is useful to measure, because it tells you about the root zone. Especially when EC is concerned.
And the difference here is lack of WHC, because it's inert media. Because you are aiming for your inert substrate to be consistent with your input vs output.
If your inert media's waste is different than your input, you have lack of aeration or salt buildup, or both.
The difference between pH in hydroponics and soil is simple as that. It's a matter of aeration, H2O and EC which mainly affects pH. Whether soil or hydroponics. DWC hydroponics is no different...
If I may offer some advice, there are two things which you mention in your post. Which I believe are really important as to what your trouble might be,
1. Not watering until runoff. (they often call it "chronic overwatering")
2. What you described happened, only took 2-3 days. (no deficiency ever comes on that fast)
3. Lockout.
9.9/10 times problems in soil is due to overwatering, overfeeding, or both. And both affect pH + both cause lockouts.
Suggesting otherwise is frankly completely false.
How often are you watering, how did you test soil pH, how good is your aeration and drainage, what is your input EC + pH?
Is your soil heavy and does the bottom soil stay too damp between waterings?
I'd be concerned something is rotting your roots, if it isn't overfeeding. Probably at the bottom of your pot. EC might be higher down there too, plus low pH.
If you were overwatering in the first place, besides overfeeding like you say. Flushing isn't helping your lockout if it's root rot too.
Your best defense in rot's case is drying your soil.
As a hunch I'd say next grow add more aeration and fluff up the soil a little more. This'll help prevent overwatering and rot.
Also water until a little runoff every time. Especially using fertilizer or nutrients. Otherwise you'll get salt buildup.
This "might" be your current problem and why there's lockout.
Hope some of what I said is helpful.
Good luck and hope things turn around.
