IMO

vegging cycle is about growing a good root system. 5000k-6500k lights; (don't matter what kind) keep the plants focused on growing a strong root system and slow, bushy leaf development. I like 20/4 light cycle....:thumbsup:..anything more than 30 days vegging is a waste of my time.....the plant should be 12-15 inches tall and have a robust root system by then. (my nirvana WW's show their sex after 28 days veg; I like that pheno trait..~eat your heart out~...

Once you have a 1 gallon pot full of good roots...you can rock n roll into the flowering cycle 12/12....2100k-4000k lighting....and transplant into 3+ gallon pots....once the females have shown themselves.

EDIT: just noticed this is the hydro forum...:stoned:...please ignore this post