ok so i have an auto ak its probably about three weeks from harvest this is my first grow so im not quite sure what im doing but its working because it is beautiful but im not sure about the whole flushing thing do i flush it the last 2 weeks or should i have been doing it because half the shit i have read says flush the last 2 weeks and the other half says flush and then dont water for the last 2 weeks so i really dont know a little help would be nice, thanks for any help!