was just wondering if anyone ever used this kind of balb, and if i have a fixure(socket,regular size) that says dl 660w 250 v on the fixure,do i still need a ballast??? ebay is where they are...250 watt Blue Spectrum 8U 6400K
E40 CFL Grow Light Bulb they have red too! does anyone know if this is a regular size screw in???? thanks again kind ones!!!! Love and Light hip