7W to 45W E27 6400K ENERGY SAVING LOW POWER BULB COLD LIGHT LAMP | eBay
iPower 4FT 45.8IN 54W T5 Fluorescent High Output HO Cool Blue Grow Light Bulbs 5 Pack 6400K - Walmart.com
InterLux 200w CFL 6400K Bulb - Farm.com Wholesale Hydroponic Systems and Grow Lights
Sunblaster Sl0900163 Full Spectrum Cfl 6400k Self Ballasted Light Bulb For Indoor Grow Lamp And Hydroponic Systems With Mogul Socket, 125 Watts : Target