Perfect. Thank you very much. Now that I've done a little research I think I'm going to go with a Lumatek ballast, reflector, etc. The energy efficiency rating of the one I had mentioned before was only 35%, meaning I pay for the 65% of electricity not being used. Not cool. Plus it's a magnetic, clunky, noisy ballast.

The lumatek has a rating of 95%, a little easier to pay for a loss of 5%. Plus with the added wattage, I have more of a chance of a successful grow. More cash upfront, but better in the long run. Not to mention the added bonus of an electronic ballast, dual mode lamp supply, etc.

Thanks for the insight everyone!