Hello, Outdoor grow Coco soil less Feed GH flora series with cal-Mag everyday 4 gallons of tap water per pot about 20/30% run off Cal-mag 1/2 tsp per gallon Flora micro 1/2 tsp per gallon Flora bloom 1/2 tsp per gallon Flora grow 1/4 tsp per gallon Feed at 5.8 PH Little back ground my plants have been nothing but prefect that actually grew to good and I ended up having to drop the 25 gallon fabric pot into the ground as they are over 8ft. They have now been flowering into week 3 and are starting to show signs of what I think is mag issue. we have had a supper bad heat wave the last few weeks with the high in the grow area at 103f with 43% hum. Some of the plants the sativa seem to be doing better however all of the plants are starting to show this yellowing that seems to start at the bottom and working it’s way quickly to the top. Just wanted to see if someone could help me out