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Discussion Starter #1 (Edited)
will a 400 watt hqi ballast fire both hqi bulbs and non hqi bulbs

i know some bulbs like the 400 w 20k radiums need a hqi ballast. i was wondering if i can still use the ballast if i were to ever change to a different non hqi bulb without having to buy another ballast. it should work right?
 
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