First time growing outdoors

Sigh, first problems for outdoor grow. I think it looks most like calcium deficiency. And given that Pro Mix Organic is mostly peat and coco coir, cal/mag are likely to be at issue. Mixed up some weak nutrients+calmag into water, and corrected to 6.35 instead of playing loosey goosey with the pH during the last few weeks for their watering on Saturday. Today I mixed a foilar spray with calmag and a bit of micro mixed in; they're still drying off in the shade right now. The buds are making good progress, but watching a number of leaves slowly turning yellows/browns has been a bit painful.