Hi
@kbloom! Use a hand-held magnifier/microscope and take a daily close look at the trichomes, they will tell you when to start to flush and when to harvest. Once you see the first milky trichomes you can trigger the flush phase, trichomes will take several days to turn 100% milky, usually between 8 and 12 days in coco, this will be your flush duration. Watch the color of the runoff, it should get more clean & clear each time you flush. Try to decrease your relative humidity for this last week (50% is a bit high, 30% would be better), this will encourage resin production and will prevent any mold/bud-rot issues. After each waterings make sure your containers get a cool and continuous breeze, this will help them to dry faster and avoid overwatering symptoms. Clear and skinny trichomes --> too soon, milky and fat trichomes --> best time to harvest, amber trichomes --> too late, THC is degrading. You will probably mixed trichomes, like 80% milky 10% clear 10% amber, this is still a very good ratio. Hope this will help, keep us up-to-date and enjoy your harvest 👊