Yeah, I use RO water so cal/mag are nutrients I use in my regular feed schedule. This is my first time in coco and Ive learned I need much more cal/mag than i did with soil. And yes I was using an Epsom salt foliar spray to address the deficiency in the Fantasmo. I plan to use the foliar spray as a preventive measure for the next grow. It's been a learning curve with the AUTOPOT with one res for both plants, but I think I've figured it out a plan to address that. Also this is my first time using Heavy nutrients and trying to figure out a happy balance for two different plants. I'm at day 50ish right now, so for now I've removed the aquavalve in the Fantasmo and am manually adding a different nutrient solution to her tray. I can add 600ml of nutrients 2 times a day and keep her fed. It's a pain in the ass but it seems to be working. Next time I'll just add a 2nd res and use it if things get too far off. I'm just pissed I f**ked up the Fantasmo......that girl has bud sites everywhere. They will definitely not produce like they would if she was happy. Live and learn, I guess ill have more flower to play with for tinctures or edibles.