My (rather unhappy) adventures in molasses
i just read you tried some molassas. Here' a cute ditty on what happened when I tried molassas in my grow so I wonder if that's where your issue began. Some people have very good success with it......not I so I stick to Sweet which does me fine without the worries of molassas gone bad.
No comment about your nutes as I know nothing about them but wouldn't rule them out as a source of your issue due to the extremely high K amount in them......but that's strictly a guess because soil and soil nutes are NOT my strong point..
SILENCE!!