i use Miracle grow "bloom booster" formula, its easy on the plants and works good for me, I only use it when im being to lazy to make bananna compost tea though.
its $5 at wal mart its like a 10-52-10 fertilizer.
not trying to be a dick but for 2 months veg time something has gone wrong, dont have much to compare the size of the plants to but this is what 2 months veg time did for me
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^^^ this is one plant, vegged for 8 weeks under a 400w HPS/MH
right now its in week 3 of flower.
so your doing something wrong, not trying to be a dick but would like to help you fix it. need every detail of your setup, 80w of CFL isnt much and i dont know much about LED. but i would be willing to bet that the plants are just light/nutrient deprived and with a little tweaking next grow could be great.
im subbed up..