2 reasons! First, early in the grow I stunted them a little with N toxicity, so I backed off on the Sensi A a little. Now I am backing off of it because I fed 4ml of CalMag per gallon All 4 of the older plants showed signs of N tox at the beginning of the grow and then showed CalMag deficency (minimal) 2 weeks ago. I was feeding 6ml A/B before the CalMag deficency, but now I am adding 3 or 4ml of CalMag per gallon. Advanced Nutrition CalMag is 4-0-0 and I didn't want to experience N toxicity again, so I just backed off the Sensi A and allowed the plants to get nitrogen from their CalMag.
**I think the calmag deficiency started because I fed RO water a couple times during that week and I am under 600 watts of COBs and LEDs??**
I did order a low N organic CalMag too but it was fucking with the PH, so I will use that on my organic plants only.
The young plants are basically water only, in kind soil. My young sour crack is getting recharge/superthrive/calmag, one of my young sour stompers is getting recharge/superthrive/calmag, and the other sour stomper is getting straight PH'd tap water (citric acid crystals added to a PH of 6.5 to 6.8)
**I decided to do an organic grow to compare to the Tang's easy schedule grow. Also, I figured that the organic grow would be incredibly easy and hard to fuck up. So if I fucked up the easy schedule grow, I'd still get some weed! I hate buying weed**
Ah! Your thinking is solid. I can't give any thoughts on your grow since I use coco myself but it's been four years of experimenting for me and lots of little changes along the way to dial things in so I'm sure you'll crack it over time. Although the girls look very green which could possibly be over feeding of nitrogen.
I went through a period of using distilled water because the local water is very very hard. I supplemented with half strength calmag under led's up until 25 days and had fantastic grows with it but the big bud coco has added calmag so I don't need it anymore now. I realised that if I PH the feed correctly then I don't need calmag at all with the AN Coco nutes. I always thought I had calmag deficiencies but it turns out adding calmag was the problem, they were getting too much of it. I never use more than 2.5 Coco Bloom and I find Rhino Skin (Silica) to be fantastic as well. Along with Voodoo juice and carboload and then overdrive for the last 25 days.
Just finished my Sour Stompers and they are banging! Mephisto has the best auto's period! I went back to a dutch passion grow recently and it was embarrassingly bad compared to mephisto. I don't know how they do it but I'm sticking with them for life!