It will work in your ballast then. You'll just need to plug it into a 220v outlet.

I've inverstigated this further since I replied last too. The only other downfall to these bulbs is the short lifespan of 6000 hours!

I suggest you look into these too.

Bulb: EYE Hortilux BLUE

Tech spec: http://www.eyehortilux.com/tb/blue/E...2-78-57945.pdf

The specrul intensity in the Blue and Reds are insane. If the charts are correct it FAR outperforms all other grow bulbs.