who is using 400watt 20000k's without hqi ballast?

naser · 07-17-2001, 02:56 AM

welll that my question.. anyone?

**Ninong** · 07-17-2001, 01:39 PM

Check this out: http://www.personal.psu.edu/faculty/...omparison.html

Sanjay tested the 400w 20,000K lamps on a regular magnetic ballast (90 PPFD) and on a PFO-HQI ballast (110 PPFD). It looks like you are about 20% better off on the HQI ballast.

Ninong

naser · 07-18-2001, 04:13 AM

20 pecent doesnt bother me.. im just looking to fire them.. if a regular 400 watt ballast will fire them up then i want to get them... i mean i am talking about 2 400 watts on a 55 gallon reef. whats 20 percent???

naser · 07-23-2001, 04:05 AM

^ still curious!

07-17-2001, 02:56 AM	#1
naser super-reefer Join Date: Feb 2001 Location: SAN DIEGO, CA Posts: 1,908	who is using 400watt 20000k's without hqi ballast? welll that my question.. anyone?

07-17-2001, 01:39 PM	#2
Ninong Moderator Join Date: Jun 2000 Location: Louisiana Posts: 20,692	Check this out: http://www.personal.psu.edu/faculty/...omparison.html Sanjay tested the 400w 20,000K lamps on a regular magnetic ballast (90 PPFD) and on a PFO-HQI ballast (110 PPFD). It looks like you are about 20% better off on the HQI ballast. Ninong __________________ Ninong

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07-18-2001, 04:13 AM	#3
naser super-reefer Join Date: Feb 2001 Location: SAN DIEGO, CA Posts: 1,908	20 pecent doesnt bother me.. im just looking to fire them.. if a regular 400 watt ballast will fire them up then i want to get them... i mean i am talking about 2 400 watts on a 55 gallon reef. whats 20 percent???

07-23-2001, 04:05 AM	#4
naser super-reefer Join Date: Feb 2001 Location: SAN DIEGO, CA Posts: 1,908	^ still curious!

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