The CFLs for vegetation growth are Sunlite-Daylite 85watt/350watt, 6500k, 4200 lumen, for flowering, Sunlite-Warm White 105watt/400watt, 3000k, 5000 lumens. I bought them from Express Light Bulb, about $25-$30 each. I started out w/ 6 vegetation lights, then got 8 of the flowering lights. During flowering I was burning 10 CFLs using clamp type fixtures, which worked great getting the lights where I wanted them around and over my gals.