Inexpensive Grow Lights / Lighting?

[GpsFrontier]

Thanks for the link to the information. I have not had time to go through it fully yet though it seems that it generally doubles the power to a particular light, but at the expense of eliminating a light. I am not sure how that would help unless space is of dire importance.

Also the diagrams refer to a exterior ballast. With CFL's the "C" stands for "compact" otherwise it's a Florescent light (FL, not CFL)The ballast in a CFL is sealed in the fixture, that is what the word compact refers to, and an exterior ballast is not compact as far as I know. Best as I can tell for tight situations where space is important, it may be useful but not with CFL's because they have sealed ballasts.