I tried it once.
I had this bag of super cheap supermarket soil laying around.
I flushed it and amended it with some good organic amendments.
(Atleast I thought I got the synthetics out of it...)
But no, I was wrong. I planted into it and after a short while I was running into issues. Know as Synthetic Death. It can happen when you mix synthetic and organic nutrients. My plants where clawing like crazy and were showing several other overfertilization/lockout issues.
I managed to pull the plants through. But the soil was pure crap also. After a few weeks it turned into this compact block which took forever to take water in...
I won't be doing that again.
Mix up a half gram of magnesium sulfate in a gallon of water. Spray a couple leaves. Check tomorrow and see if the yellowing goes away on those leaves.
If it does, either foliar spray the plants or add a half gram/gallon of epsom the next 2 waterings.
Hey hubbleman did you see this response in the other thread?
https://www.icmag.com/ic/showpost.php?p=8503956&postcount=6
I think he nailed it!
Seriously, I bookmarked his post, cause I know that will come in handy again. Make sure ya rep him! Seems like so many magnesium deficiencies, and if it's cause of the light that would explain a few of them.That solves a problem that had me scratching my head for nearly 3 years, much obliged