Hi
@Chewbacca! The flush duration is determined by the trichome's evolution, in soil it can last for 7 to 14 days. Take a daily closeup look at the trichomes under different lights --> our grow lights can mislead us. If you're looking for the THC peak (mostly milky) then you need to start to flush once the first ~10% milky trichomes appear (but this is also strain related). Trichomes have different shapes, actually 6 types of trichomes can be seen on a bud and some don't have tails. Hope this will help, keep us up-to-date and happy growing 👊