Yellow leaves

Chloryphyll within the leaves is not being adequately replenished. Chloryphyl has a central magnesium core. If you run deficient which often happens from the massive uptick in used calcium / magnesium. Magnesium is mobile so it can be taken from old growth to support new growth closer to light (survival). Calcium magnesium. But be careful cal mag itself is somewhere in the 3-0-0 range. We don't want anymore nitrogen at a time when we no longer need much of it at all. Maybe half dose n see how it goes. I like to give her a feeding prior to flower then week 4-5, that should do her till harvest. No cal mag is not a bloom booster, but calcium is the grease on the wheels for all other nutrients. Magnesium is your power core for chloryphyll and possibly the single most important nutrient of all.

Well, my friend, I somewhat agree with Roberts. Burnt tips from nutrient buildup, but for me, it won't be due to lack of drainage, but rather too much fertilizer. Fertilizer should be once a week, and some strains can handle more. I do fertilizer once a week and some every two weeks. Even that is too much. Better and bigger buds than I've seen growing in the wild, without touching them. Cheers and good luck!

Your issue is you are not getting enough run off when you are adding feed. You have a salt build up that is causing nutrition burn. Brown leaf tips curled up and in is nutrition burn. This salt build up is causing a lot of root issues and ph fluctuations as well. The run off helps remove old nutes to avoid this. I bet if you test your run off the tds and ph are way off.