Hey guys, I just deleted a post I made earlier on this, but the title was misleading. Anyway, a while back I posted some pictures of yellow splotches on my leaves. It occurred around the same time I realized my 150w HPS was very close to the top of my plant, so I assumed it was light burn or light bleach or something. At that time, temps in my box were about 83F so I didn't think it was heat stress or anything. The yellow splotches seem to be located closest to the bud sites or the top of the plant. Here were the older pics with the yellow splotches, about a week ago: And here they are this morning, although for some reason they look WAY WORSE in this photo than they do in real life.. strange.. She's a Northern Lights fem from Nirvana (via Attitude Seeds). I've been feeding her FoxFarm trio line the entire growth, in Ocean Forest soil. I've been using Distilled water with Cal/Mag (1 tsp/gal) every watering, adjusted to 6.3-6.5 pH. I just started Humboldt Snow Storm Ultra recently, and have worked my way up to full strength Tiger Bloom and Big Bloom. Temps have been between 75-85 the entire grow, but recently have been hitting 90 for the first couple hours of 12/12 (due to the summer heat), but this new heat wave has been AFTER the occurrence of these yellow splotches, just FYI. Other than this, things have been going very well. And the odd thing is that despite the yellow splotches, she seems to be growing REALLY well, and her buds are getting fatter and frostier everyday. So really, the only thing that actually seems wrong is the appearance of the leaves. It doesn't seem like it's getting worse, but then again, it looks much worse than the picture from a week ago... Anyway, I'm looking to find out exactly what this is. I can't seem to get a straight answer anywhere. I thought it was light burn before, but then I hear it's a pH issue, or a deficiency, even Mosaic Virus (eep!) or water droplets (I don't wet my leaves...) The only thing that gets me is how healthy she seems otherwise! I mean, look at the bud comparisons from the 2 pics a week apart, she seems to be exploding in trichomes and her buds are getting fatter everyday. And here is a full shot of her this morning as well. Overall she's doing great, it's really just those leaves near the top/budsites Please help! Should I be worried about this? What can I do? I just hope it doesn't affect my harvest Thanks guys!