if your not usin hps thats your problem. i grew very potent weed with no nute whatso ever.. and the buds wer lovly, you need at leats 400 ws for a good grow.. nething less ie cfls youd need about 3 or 4 lights to bring the lumen output up.
they look abit small. i think you lstd them.. am i rite.
doing that makes the plants grow alot slower. On the (n) plants would use it all up quickly during flowering but if you havnt got enough lumens the theres no point givein her loads of nutes for she still wont grow.

Nice looking pistils

PEace
TBB