Sorry to read about your hermie buku's man. But I wouldn't throw out fem buku's just yet. I just grew 8 fem Buku's and they were all chicks, I even opened the door during the dark period like 6 times, 1 was really bad, super bright light in my hand for some reason. I vegged for 3 1/2 weeks, and flowered for 8 1/2. I got 4.7 ounces off the best one (cured) and 2.8 off the worst, but they averaged to 3.8 ounces each. nice couple pounds. From your pic's you didn't look like a new grower, so I can't imagine you overstressing them would be the cause for the herm's. But i have an idea. All 8 of mine were grown in soil, and I've done hydro before with other strains and I just don't like it, in my experience, it only makes an eighth to a half ounce difference, with a whole lot more shit you gotta deal with, I was always spillin reservoirs by bumping em and shit. But I've read a few places that hydro might have an effect on the chances of your plant being a hermy. There's no proof yet, but I've read it from a lot of very experienced growers, and I myself have had more hermys in hydro than soil. I've only had 7 hermies in the hundreds I've grown. and 6 of them were in hydro. I always have some TH Seeds Burmese Kush growin, I love that strain, so don't completely rule them out just yet. Just my thoughts