Hello .. I have just ordered 4 of the 1000Watt Quantum ballasts and bulbs and am doing a 10x10 room with OG !! here's a link Quantum 1000 Watt Dimmable Electronic Ballast - Electronic - Digital- Ballasts - Ballasts and Accessories - Lighting Has anyone ever used these ballasts ?? About how warm do these get?? Thanks for your response ... Also ... Has anyone heard of EMPEROR Lighting 1000Watt BULBS ??? cheers