Radium HRI Lamps German made Radium 20,000K provides excellent coloration and intensity. Brings out fluorescent pigments in corals nicely. Magnetic pulse start, HQI, or an electronic ballast is required to ignite this lamp. It will burn bluer on an electronic or pulse start ballast. Radium - HRI Lamps #510025
10,000K
230/AQ/RX7S 150 Watts Double Ended Base M81 Ballast
Radium - HRI Lamps #510027
20,000K
230/B/RX7S 150 Watts Double Ended Base M81 Ballast
Radium - HRI Lamps #510030
20,000K
MH250W 250 Mogul Base M138 Ballast
Radium - HRI Lamps #510040
20,000K
MH400W 400 Mogul Base M135 Ballast
Radium - HRI Lamps #510020
20,000K
MH1000W 1000 Mogul Base M83 Ballast
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