Where can I buy...

[Dubsak]

Where can I buy a light ballast that supports both HPS and MH? Ideally, I don't want to spend more than $350, and also it would be nice if it came with both kinds of bulbs.

[the image reaper]

most any lighting wholesaler will list those as "switchable" ballasts ... that's what you're looking for ... try 'sunlightsupply.com ... :smokin:

[Rictor]

any greenthump store will sell the switchables www.maxiumyeild.com garden wholesale