MH bulb in my HPS setup?

ok what i was wondering is, i have this 150w hps setup going on, pics below, can i put a 150w mh bulb in there for vegging? i dont wannt mess up my ballest, i just got the thing brand new and it kicks ass lol. (my grow space is very small)
anyways, any info on this would be awesome!

dang my comp isnt letting me post my pic, ill get one soon, either way some advice would be nice ;p

METAL HALIDE MH150 WATT CLEAR MEDIUM BASE SUPRA LIFE LIGHT BULB: Compare Prices, View Price History and Read Reviews at NexTag

HELLO?

you can use a conversion bulb in a hps ballast.

any links to where i can find what im looking for?

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Originally Posted by akisgift

any links to where i can find what im looking for?

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just google search metal halide conversion bulb