Dumb Question

I'm using 600w MH lights for veg but my ballast only works at HPS. It seems to be working fine though, am I missing something here?

Nope. MH works with MH and HPS ballasts, HPS only works with HPS because MH ballasts don't have an ignitor.

This will reduce the lifespan of the MH bulb.

will it reduce it by that much?

Just for classification purposes. You guys are saying I can use a MH bulb of the same wattage as an HPS, in an HPS socket and ballast without any side affect to the ballast?

thats what i'm asking sheapdog

sheapdog420 said:

Just for classification purposes. You guys are saying I can use a MH bulb of the same wattage as an HPS, in an HPS socket and ballast without any side affect to the ballast?

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yes, you can.

I disagree. From my experience, my ballast got extremely hot and I noticed the MH bulb fluctuating in intensity. Why do companies manufacture HPS ballasts, MH ballasts, MH/HPS combo ballasts and MH conversion bulbs to use in HPS ballasts?

Just my opinion.

holy shit, I did not know this. Thanks for asking your not so "dumb question" OP

Breadman said:

will it reduce it by that much?

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What is more important to me, is the risk of fire from any electrical device.

Good Luck..

I respectfully would like to hear more opinions on this.

J2M3S: I think you raise a good point. I am also inclined to think this may be a marketing ploy to sell more ballasts to one person. Why sell one product, when you can sell them two. But more clarification would be nice to hear.