Hello, this is my first grow and my 3 girls are in their first week of flower. I'm using the pro grow 180 led light and they're in 5 gal buckets with pro mix hp. I'm using jacks classic and blossom booster 1\4 per gallon every other watering. I noticed about a week or two ago on "jasper"(name) one of her very large fan leaves wilted and wouldn't accept any light but it didn't look to have anything wrong with it. I thought maybe the light burnt it so I moved the light up some. Then a day or two later I noticed some yellowing on the very bottom leaves so I fertilized all 3 girls with classic 1\4 per gallon. A day later jaspers bottom leaves looked wilted as if it needed some water but was plenty moist. It started at the bottom and is making its way up the whole plant. Its about half way wilted and top of the plant still looks healthy. Nothing looks wrong with these leaves except they are wilted and will not accept light. The other 2 girls are fine. So I pulled jasper out to inspect and noticed a line of what looks like "holes" running in a straight line on one of the her branches to a large fan leaf, but this particular leaf is still healthy. I also noticed some white substance on the stem and when I rubbed it off it looks bruised on the main stem. Please help, I've done some research and can come up with a few ideas but I just don't know for sure. I thought maybe aphids but I do not see any bugs anywhere on her when I did the paper shake test. And she is not getting any better. Please help.