Good morfnoevight All you happy Thursday Stoners. Hard to catch up..........................
I would go water, water, water, fertigate repeat. Not based on the weeks but how often the pot needs water. The gypsum must be soluble or the numbers in my calculations will be off. Epsom Salt without scents or dyes or lotions etc. are ok.
Actually the idea is to avoid the possibility of a deficiency or a lock out from too much of something. PH is my nemesis, You only have to screw up once to mess up the look of your plants. I have looked at automating it several times but it is just too friggin expensive for my tight ass.
Yes In coco add 50 PPM Ca. 50 PPM less K and more iron if you have it. Hint - Kelp. Be sure to flush weekly with 50% strength nutrients.
Ms. MOG dislikes everything about cannabis, it smells like a wet dog to her and makes her sick to smoke it. She is very very tolerant of my hobby
ppp
good news and good luck with the covid test. 
