Hi, I'm not the guy for deficiency diagnostics but 72f is a bit too cool for healthy cannabis growth.....They don't go through water fast enough and it can cause root problems. 76 will work 78 - 83f better...try and add some heat to the location for their lights on period....house temps at night are good but with lights on they need more heat. I've a small heat lamp I use in my veg closet and a heater in my flower tent.......
I've used Promix for over 20+ years with GH nute's and I fertilizer every second water. In 3 gal pots they get fed once a week, in 5 gal pots every 8 -9 days water/ feed/water/feed as directed on the their feed schedule . I hear in Coco they light feed each time but I've never heard that about Promix
I've used Promix for over 20+ years with GH nute's and I fertilizer every second water. In 3 gal pots they get fed once a week, in 5 gal pots every 8 -9 days water/ feed/water/feed as directed on the their feed schedule . I hear in Coco they light feed each time but I've never heard that about Promix
I think it really depends on the nutrients you're using and the needs of the strain you're growing. I use Promix with Megacrop and I feed almost every watering without issue when just using the mega, it's when I start adding other things I sometimes get into trouble...