MH ballast question.

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Well-known member
Sep 21, 2003
Heres the sitution, Im building my own DIY MH lighting systems. I have been reading as much as I can on this and have decided to go with 2-250 w Ushio 10k lamps. Every thread or article states that the 250w lamps fire off of a M58 ballast. That is but one which states that shows the lamps firing off of 2 different ones, namely the M58 /M80 ballast. There is a asterisk showing that the M58 is not ideal for this lamp. Has anyone got these lamps have an idea on what is right. I can post the link for you to read and maybe you can help me out on what is right.


One other small question, can 2 ballast be kept in the same box or does there become a heat issue. Trying to do this right the first time.

Sorry one more small question, what is a diamond reflector.

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