This is my first grow, I'm pretty pleased so far with the results. One or two concerning cock-ups along the way but nothing too major. 
This is indica dominant Knockout. Currently under a 400w HPS and 6 weeks, 5 days in from the flip.
The breeders say this is a 6-9 week strain, with them stating they will be 'bigger and better at 9 weeks'. How much longer would you keep these flowering? Brown pistils are around the 30-40% region for reference.
Also I have a weird problem with one of the colas. I guess it is light burn, the cola pic is there in the attachments. All the main colas are about 12"-14" away from the bulb, but this is the only one with the problem.

This is indica dominant Knockout. Currently under a 400w HPS and 6 weeks, 5 days in from the flip.
The breeders say this is a 6-9 week strain, with them stating they will be 'bigger and better at 9 weeks'. How much longer would you keep these flowering? Brown pistils are around the 30-40% region for reference.
Also I have a weird problem with one of the colas. I guess it is light burn, the cola pic is there in the attachments. All the main colas are about 12"-14" away from the bulb, but this is the only one with the problem.