Thread: Radium 20k's
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Old 03/22/2021, 12:48 PM   #7
C.Eymann
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Join Date: Nov 2015
Location: Winterpark FL
Posts: 1,483
At TSA's coral farm we still run 400w radiums for a few hours a day on our grow out systems.

Its important to note, if you are using 250w Radiums you really should be running them on pulse start magnetic HQI ballasts, E ballasts will fire and run them, but you wont get that "Radium Magic" that everyone loves.

I might have a few old 250w radium bulbs from my old system I might be able to send if interested.


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