organic soil help

Im doing my first organic grow with coast of Maine pro mix. My girls are in wk 5 of veg and some deficiencies have showed up.From what it looks like its something cal/mag would resolve. But since this is organic soil Im wondering if adding this would be a bad idea? Is bonticare cal/mag plus totally organic? Would it be better to add pulverized dolomite lime to my next feeding? Im using ro water and i understand it gets stripped of calcium and magnesium but i was hoping the soil would fix that. What about compost teas? I dont have the time to brew my own or anything and was looking at the bonticare pure blend. Would that be the way to go? I really want to get this issue resolved asap so my girls have a healthy flowering phase.

If your soil ph is decent I would start with adding the liquid cal mag to your water. Liming really needs to be done when you mix your soil.