StareCase
Well-Known Member
Thank Rob ... what you say makes perfect sense. I have two plants on the grow, each is a different strain, and both react slightly with respect to distance of the LED to the canopy.Tim may have some other info to share, but my experience has been that there is no single answer to that question. Just like with any specific nutrients, some strains seem to need more than others, so expect LEDs to impact them differently. I regularly grow a handful of different strains at a time and they each have individual needs. I guess the trick is to learn the signs of over-doing it, and know when a specific strain, pheno, or just individual plant is getting more than it needs.
Interesting how that line between nutrient burn and nutrient deficiency can be really razor thin. With Pro-Mix HP, I found that leaning to the lesser side when mixing the fertilizers was beneficial. I'll be harvesting within the next 2 weeks and I'll see what I get when dried and cured. That will probably tell me if I am using the right amount of Cal/Mag.