400W MH DE light bulbs for SPS tank?

kangym · 06/18/2007, 04:08 PM

Not many DE MH bulbs on the market for 400W. I have been running PFO 400W DE 20K on HQI ballast for almost a year for my SPS tank. It is about time to replace with new ones. Anyone has suggestion or good experience in the 400W DE MH bulb?
So far, there are Hamilton, Coralvue, PFO, South Pacific Sunlight and Icecap carry the 400W MH DE bulbs. Any recommendation?

kangym · 06/19/2007, 02:14 PM

If I could start again, I will use 400W SE Gieseman Coral lamp with LMx3 pendant. Not many choices for 400W DE MH bulbs. I heard the DE bulb lasts longer and brighter than the SE bulbs. Actually, After 9 months, my PFO 400W DE 20K bulbs don't look as bright as they were. Just not sure if this will cause any harm to my SPS? Do you really think the DE bulbs will last longer and brighter than SE bulb?

06/18/2007, 04:08 PM	#1
kangym Registered Member Join Date: Feb 2005 Location: CA Posts: 348	400W MH DE light bulbs for SPS tank? Not many DE MH bulbs on the market for 400W. I have been running PFO 400W DE 20K on HQI ballast for almost a year for my SPS tank. It is about time to replace with new ones. Anyone has suggestion or good experience in the 400W DE MH bulb? So far, there are Hamilton, Coralvue, PFO, South Pacific Sunlight and Icecap carry the 400W MH DE bulbs. Any recommendation?

06/19/2007, 02:14 PM	#2
kangym Registered Member Join Date: Feb 2005 Location: CA Posts: 348	If I could start again, I will use 400W SE Gieseman Coral lamp with LMx3 pendant. Not many choices for 400W DE MH bulbs. I heard the DE bulb lasts longer and brighter than the SE bulbs. Actually, After 9 months, my PFO 400W DE 20K bulbs don't look as bright as they were. Just not sure if this will cause any harm to my SPS? Do you really think the DE bulbs will last longer and brighter than SE bulb?