Yeah Its a pain. Its the only leaf that has done this and other then some slight canoeing on some other leaves (this was before the light was 27") this is the only leaf thats done this.
Day 37 of flower - 28 degrees RH 50% - feeding at 1.5EC (1.4 A&B + 0.1 of bud booster) 3x a day - light 27” inches from the canopy. PH 6.0 each time I feed.
Bottom leaves going brown on the tips - unsure what the issue is.
I am growing in coco, feeding until run off daily. My PH is 6.0 and I am using a HPS bulb on 250watts. The distance of the light is 30 inches away. My temps stay between 22 - 25 degrees and my humidity is between 50 - 60%