Getting the right richness levels with the KIS will take a few trials, maybe consider using a good soil vs. soilless? Add into the mix that one "nute size" doesn't fit all cultivar to cultivar (even pheno's), pot size vs. plant size too, and it's a moving target tough to hit! I'd be leery of literally 2x the KIS amendment in the Promix, I think that will burn/N tox' for sure... I also think the lights are more to blame for apparent Mg or Ca symptoms. I didn't use any Ca-Mg on my run, even using RO water as well,... in other words, I don't think any significant defc. is actually happening. I treated the Rx Blend plants with foliars to fix the symptoms, and it didn't really seem to impact much, certainly not like normal

... Sun/photo girls never ever showed such signs at any stage...
Chat with EoF some, see what he thinks since he's got much more experience with KIS than we do...
Ooo, White Chz, I got a sample nugg of that a while back, nice cross! Paired with SF should be a winner

... F1's?

late night seed binging, a big no-no! ...I'm losing track here, PM, here, there

, you mean The Skunkist/Urban Legends? I think I need to wave them at Admin, maybe up his/their presence here, get some sponsored testing going! He is well vetted already...:smoking: