I use a similar set up. 2 hps lights, digital ballast. air cooled shade. I exaust threw the lights hooked to a charcoal can. I used a fan and my fresh in to keep the room aired out. But getting the heat out of the lights defenatly makes the room more consistent. My 2 cents.
its been way too long to hold my breath on this order.
Ordered from Nivana last week.
5 seeds, got 15. 8 out of 10 cracked and solied already.
No complaint
I know some sativa that take up to 10 weeks so a few extra days isnt a big deal. Yes waiting is smart but to long i think is a waste and you may lock your nutes in the plant.
I say go safe and learn for the next crop.
10 weeks is already a long time to be flowering unless it s a sativa. Try another week. But eventualy roots stop taking in nutes and remember you have to fit a week of flushing.
So at one point you have to accept your crop.
The way i look at it is. you have a 8 or 9 week window."depending on...