when can i havest

i have been growing this plant from seed under a 400w hps dont no how long its been flowering so i dont no when to cut it down

looks ready to me.

did you remove all major fan leaves? it looks real close but maybe not quite there? whats up with the yellowing in some buds? pic one looks tasty.

Id say those are about ready my friend.
This subject is very much based on opinion but there is a certain amount of scientific fact that is relevant to us growers.
after the plant has been flowering for a certain period, the trichome production reaches a peak of about a week, this is known as the ripening period. after this time, the properties of psychoactive compounds begin to break down you want to harvest the plant at the optimal point in time. some would say when 1/3 of the pistils turn orange. some like to be more exacting in their methods by examining with a magnifying glass their plants in many areas to inspect the shape and color of the trichomes. the trichomes should be milky to light brown in color, these are mature trichomes. do not harvest when the trichomes are still see-through, these are immature trichomes. also the shape of the trichome should resemble a mushroom.
well i think ive said all I can on this subject I hope this helps. happy harvesting Luke.

yeah all the fan leaves were cut off because there was not enough room and so the light can hit the bottom of the plant and there is no yellow its just the pic should the buds be nice and tight and hard

please some one reply its my first grow i dont wanna fuck it

Have you flushed it yet? Id harvest within a week if I was u.

yes...flush it with plain water for the last 10-14 days of flowering...your plant looks like its almost ready...perhaps another 3-7 days!