When can i harvest?! How much time do i have to flush?(pics)

I am on 6 weeks flower and over half of the pistols have turned red and a couple are even withering. I just starting using only water and began flushing. Im a little confused because i dont know if flushing means to water without ferts the same frequency as i normally do or to water it much more frequently, flushing the soil as you with if you overfertilized. Also i dont want to miss my peak period of potency, if my plant is ready in one week can i harvest then or is it better to flush for a full 14 days. If it helps my setup is 400w hps fox farms soil in 3 gallon containers, and most of the entire roots organics line. Im guessing that growing organically would allow me less time to flush, but you guys are the pros so please any response is appreciated.

i think you have more than a couple of weeks left

could you please explain why you think that. I know the colas need to thicken up a bit but how do i make sure i dont harvest too late. i also just started flushing tonight, should i have waited longer?

im no expert but with all those white hairs showing you might a small growth spurt coming. red hairs havent begun to recede. start lookin at the trics

i have a 45x micro and i think i can see the difference between clear and cloudy bulbs on the big trichromes, but its very hard and i cant really see any amber but im assuming it would be too early anyway. Would you at least say i am good to flush until harvest?

Yeah you have some time yet.