try more of the neighborhood of 2 weeks plain ph-ed water, then thouroughly flush atleast twice in that period of time to disperse all synthetic nutes . if using organic nutes 1 week before and flushing once will do. also at last 2 weeks of flowering stage you should see a potential burst in the size of your buds on a daily basis anyways. i have no conclusive evidence on my own that they will get any fatter with that method but do seem to smell lil stronger . try flowering 2 weeks longer than due date then you will definatly have fatter buds .