I have 4 LED lights that i got FOR FREE. they are basic white; dunno the lumens or wattage or wavelength or anything. They're pretty bright- They were for streetlight retrofit. I get 130 foot candle /1700LUX at about 24" from them. Think they'd be worth trying to use for growing? I have 5 Northern lights girls that I'll need to move inside to finish pretty soon on accounta its gettin cold outside and they are just starting to bloom.(michigan)