What nutes did you use?
I would let them go another maybe week... those hairs are looking pretty red, keep an eye on them and give serious consideration around monday/tuesday.
Great looking plants
the only way to tell that is by harvesting, lol. you really don't want to be squeezing and damaging your unharvested buds. they'll prob. feel a bit hard when squeezed on the plant. they're still full of moisture, and this can be misleading. that's why you want to check the trichomes.[ are the buds dense or light and airy?
From the looks of the top cola's they look almost done.. However everything under them looks like they need a week or two more.. Pretty fast at 6 weeks though.. are the buds dense or light and airy, and for personal interest...what lighting are you using? - STELTHY
the only way to tell that is by harvesting, lol. you really don't want to be squeezing and damaging your unharvested buds. they'll prob. feel a bit hard when squeezed on the plant. they're still full of moisture, and this can be misleading. that's why you want to check the trichomes.