I say Dankskank nailed it the first time with saying you have spider mites. I'm currently trying to win the war against them myself. You can't see them even with a magnifying glass, at least the ones I have. I've read you need at least 30x mag to see some of them. I'd get a good magnifier and definitively rule out mites before screwing up all the nutes. I went down that route myself because I couldn't see any bugs either, and 3 weeks into flowering I had lost half of my (only) plant. Damn things will kill your plant if you don't control them. Oh, and I never saw a single web either. But the spider mite treatment has her looking green and healthy again.
I just looked at your video on YouTube from Aug 9. If its not spider mites, I'll eat my hat. Since you're doing an outside grow, it will be easy for you to spray them all down. Just a spraying with plain water will physically knock many of the mites off, but you'll still need something to get rid of them. Being outside though, I suspect they'll keep getting reinfested so you'll have to re-treat to keep them under control through the end of your grow. If you search the forum, there are lots of organic treatments you can use like Neem Oil, rosemary oil, and a spray made from habaneros peppers. Adding a tsp or so of dish soap per quart of spray used also helps. When I was in college, long, long ago, spraying the undersides of the leaves with dish soap was THE treatment but the buggers are hardier now. Good luck, they're a pain in the ass.