did you read the part about pH? the form is there for a reason.

my first GUESS woud be a pH problem. this can cause a nutrient lockout. it doens't really matter which nute it locks out because the pH has to be fixed regardless.

second guess, could be a heat issue. i'm not gonna sit here and run down everything it could be, hence the form. help me help you.

anyone can come in here and guess. most people are gonna tell you to fill out the form. the more information the less variables.

by the way, your soil has nutes in it and then you are adding MG numerous times a week? at what strenght?

see, that would have been answered via the form. i understand it's confusing (not really, it just looks it). there will be a new one coming. until then....

-shake