L.E.D light questions ...

I saw some led lights on ebay for really cheap what are the guidelines for these ...like how many watts per plant and what color and so forth ..i looked around this site but didnt see alot of info. I am completly ignorant on this subject so ANY input or comments are very welcome

Don't buy them that's for sure.... Just do a google search. The led spectrum needs to be very specific for effective plant growth, most of those cheap ones online are made of nothing but cheap plastic and 2 cent leds.

bump no one knows much about these i guess