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Old 03-17-2004, 11:13 PM   #16
GDominy
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I'd call the manufacturer of the ballast and run it buy them. Tell them what you want to do and see what they say
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Old 03-18-2004, 03:31 AM   #17
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[quote="GDominy"]I would have to say they are pretty close to 18000k... They are absolutely not anywhere near 5000k.. quote]

From The Krib: http://www.thekrib.com/Lights/fluorescent-table.html

lumens lux K degrees
Power-glo 2200 180 5400
Sun-glo 3100 NA 4200
Aqua-glo 960 NA NA
Life-glo NA 475 6700 (internal reflector)
Flora-glo 2180 NA 2800
Marine-glo 1480 NA NA (probably above 7000)

Edit: should note I just noticed this data is pretty old so you could be right. The bulbs may have changed.
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Old 03-18-2004, 07:51 PM   #18
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good idea ill call them.. shoulda thought of that myself.. infact ill call about the tubes aswell and see if they are actually 18000k
im sure it would be worth knowing if its true or not.
thanks guys
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Old 03-18-2004, 08:05 PM   #19
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Quote:
Originally Posted by Capt
From The Krib: http://www.thekrib.com/Lights/fluorescent-table.html

lumens lux K degrees
Power-glo 2200 180 5400
Sun-glo 3100 NA 4200
Aqua-glo 960 NA NA
Life-glo NA 475 6700 (internal reflector)
Flora-glo 2180 NA 2800
Marine-glo 1480 NA NA (probably above 7000)

Edit: should note I just noticed this data is pretty old so you could be right. The bulbs may have changed.
Ok all of the other numbers look right.. but I'm pretty sure the power glo spec is dead wrong. I put a 5000k bulb next to my power glo last night and they are not even remotely close. Check this image of my power glo's next to 3 6500k Osram Sylvania bulbs. 5000k "should" look more yellow tehn these bulbs, but as you can.. they are pretty purple..

http://aquafiend.plantedtank.net/ima.../135lights.jpg
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Old 03-18-2004, 10:21 PM   #20
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Those are powerglos??? :shock:

I only have one powerglo and it's the only bulb on the tank so it's hard to compare. In about a week's time I will be putting the powerglo in a 2 bulb fixture so I will be able to get a better idea then.
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Old 03-18-2004, 10:42 PM   #21
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Those are! Its very difficult to tell when the bulbs are just by themselves.. but when you put them next to another bulb you can really tell the difference.
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Old 03-19-2004, 12:16 AM   #22
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is that a dimmed image? those lights dont look to bright. but i see what you mean. a nice violet from them.. are they brighter and watt watt are they
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Old 03-19-2004, 01:34 AM   #23
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The camera automatically dimmed the image.. each one of those longer bulbs are 165 watts so you can imagine how bright it is.
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