These are my plants' day 53/63. There are 4 plants in 10-gallon pots. All fed the same nutrients, all from the same water source. The temperature above the canopy has never reached above 78F. Currently running 2 315 CMH lights. Aside from more canopy management, and colas are too heavy for the stocks. I did feed my plants a one-time nutrient of House and Garden, 3 consecutive weeks thinking it was another Nute. I have attached the incorrect nute, and images of my plants. Only one of them is significantly affected, and while the top colas look burned, the bottom of the canopy still has luscious green sugar leaves. I have since flushed my plants, and am currently only feeding them water, hoping to keep the plants in flower for 10 more days without any more significant delays. Can anyone identify if the root cause is truly the misfeeding, or anything else?
When I see brown and crispy paper-like leaves, its a potassium deficiency. Could be not enough potassium, or could be enough potassium but wrong pH. A couple strains I like tend to get potassium hungry last few weeks, so I actually mix back in a little of what they were getting in veg or just straight bump the potassium up. If that burn gets to the buds, they will be fubar, you will want to chop that plant the second you see some of it in buds.