So took a look at my girls and noticed some brown spots on my leaves (which started after using protekt hmmmm!) But anyway I am assuming I need some cal-mag. The question I was wondering is how long to use it and will the brown spots on leaves return to normal? By the way ph is at 6.4 and I have not started giving any nutes thus far they are 2 weeks old and I'm using pro mix organic was planning on starting nutes this week until I saw the spots. Thank folks