Is This A Good MH Light for Orchids?

[Joseia]

Is this a good MH Hid light for orchids? It is a Plantmax MH 600 W Conversion bulb - a spectrum graph of the bulb's output shows peaks in the blue (450nm), green (550nm) and orange/red(590nm). It's a Plantmax conversion bulb that can fit in an HPS ballast with a 7200K temp. I'm also looking at a dimmable ballast that can be set to 600/400/320/250 watts with the same 600W bulb. I'm no expert at reading those spectrum charts, but it seems like it would be a good choice for me. I live in a condo with very low natural light levels, and I'd like to try growing more than phals and paphs.