Aerogrow....for weed??????????

ok so i got one of these from my work and planted some seeds in the other day...this is my third grow, first hydro and like everybody else says the lights are too small, but what do you think about adding my own lights (left over from a prior grow) that should solve that problem, if you get more light is it really that bad of a system? i'd think that one hydro setup is as good as the next (im not talking about passive wick). other than the lights why are the downsides?

Now that I see that thing- seven plant sites- that res is simply WAY too small. Sorry. Maybe you could use it to root clones in instead, and then put them in a real system.