My indoor hydro grow is under 14/10 now, strain is Pure Power Plant. I started at the traditional 12/12 for 2 weeks then switched to 14/10 - no build up.
I am now 5 weeks into flowering and here is what I see.
Growth has not been compromised, in fact one gal is now 53 1/2" tall.
Bud formation is excellent, in quantity and quality.
Resin has begun to form on all except two females - by the way no male flowers have sprung up thus far.
As stated two females are in full flower but have not yet begun to produce significant resin. However, for some reason both of these gals do not resemble their sisters at all, in fact they look unlike any strain I have seen to date. Hard to explain. It maybe that due to some mutation, so perhaps these two would prefer the traditional 12/12.
What I have noticed and this concerns me slightly is that the plant and thus buds appear focused on vertical growth and hence they are not "bulking up."
I am presently experimenting with a small outdoor grow, yes it is November however I live in the south. I noticed that these plants are smaller, have respectable bud quantity and the buds are thicker. This may have to do with the temperature and # of hours of light.
That said, thus far 14/10 has worked for me, however I still have a few weeks to go.