It works AMAZING, I switched my plants from some shultz organic, and within a week... amazing results... check out my post in the general marijuana growing for pics.
I have this to say about it. Anyone who tells you that its too hot for seedlings is pure wrong. Oh and the whole how long it has nutes for, it depends on each plant. They will tell you when they need nutes. I'd still buy some Grow Big for Veg.