I'm with GMSgrows You have an excess of Nitrogen and overwatering My advice: let the soil dry out and do a watering only with adjusted pH water. Do this for up to three consecutive times Then you can resume the nutrient program you're using, but at 50 percent (half) of the nutrients you've been using so far

I think your using way too much calmag. How often are you giving it ? Your plants are auto's & as such can't tolerate what a photo period plant can. The leaves are going black.

you have a phosphorus deficiency so up your phosphorus. Use a pk booster, preferably without nitrogen without nitrogen. Add some more calmag and you are possibly overwatering as well with drooping pedals, possibly beginning stages root rot