Bro, the yellowing of the fans is inevitable, cal mag will not prevent it. What day are you on now? Should still be a lot of fattening on the way. See how the buds look fine and only the fans are yellowing.
Cal mag only useful if u seeing a def, from what I can tell you've not got that issue.
I'd defol the yellow fans and keep running the nutes.
Cal mag only useful if u seeing a def, from what I can tell you've not got that issue.
I'd defol the yellow fans and keep running the nutes.