Another MH question

[falcondob]

Looking at other DIY posts for metal halide, I am kinda confused (normal state, no worries). How do you know if a given ballast is sufficient/correct/improper for a given MH bulb?
Thanks,
John

[PeeJ]

Specifically which combination are you speaking of?

[MikeDeL]

This article is has some good info.
http://www.californiareefs.com/tanktechlighting.htm

[falcondob]

Thanks for the link. Lots of useful info.
John