Fast buds un-named test genetics “FF02”

I have a little issue with some clawing going on here. But only on these 3 plants. These are the ones closest to the circulation fan which was right on them so I pointed it upwards a bit last week to not hit them so hard. Granted it’s not been a problem before. They are in coco and the run pretty dry every other day and they get a reasonable 800ppm water of nutrients from floraflex with cal mag and some micros from ghe. I can’t imagine it’s a nitrogen toxicity in the second week of flower especially with these nutes. Now only on the middle one I also have a large fan leaf as the photos show starting to yellow. What do you think??