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This is a discussion on lighting within the Saltwater Aquarium Equipment forums, part of the Beginner Saltwater Aquariums category; --> what does 1000k and 2000k mean in a lamp...

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Old 05-02-2009, 05:03 AM   #1
 
lighting

what does 1000k and 2000k mean in a lamp
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Old 05-02-2009, 09:16 AM   #2
 
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You must mean 10,000k and 20,000k. This is a kelvlin rating which means basicly intensity/color spectrum. This has nothing to do with strength
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Old 05-02-2009, 09:48 AM   #3
 
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10,000K(Kelvin) or 10K , is pure white while 20,000K, or 20K, is very blue and i used as a actinic suplimentation bulb. It's a way to measure the wavelength of the bulbs, but it also tells you the intensity of the light. Contrary to popular belief, the 10K will put out more PAR (Photosynthetically Active Radiation) then the blue bulbs do. There's quite a differance between a bulb that is 10,000K to a bulb that is 12,000 or 14,000K, the PAR is going to be lower for these. PAR is important because it's the ready energy the corals need to consume and grow. I personally use 14,000K bulbs and enjoy the blue that I'm getting out of my bulbs. It's not as intense as the 20K, but it's not as white as the 10K.

I hope that helps. I'm doing PAR measurements myself and hope to be posting some #'s here in a few days.

Happy reefing!
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Old 05-02-2009, 05:35 PM   #4
 
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Quote:
Originally Posted by Kellsindell View Post
10,000K(Kelvin) or 10K , is pure white while 20,000K, or 20K, is very blue and i used as a actinic suplimentation bulb. It's a way to measure the wavelength of the bulbs, but it also tells you the intensity of the light. Contrary to popular belief, the 10K will put out more PAR (Photosynthetically Active Radiation) then the blue bulbs do. There's quite a differance between a bulb that is 10,000K to a bulb that is 12,000 or 14,000K, the PAR is going to be lower for these. PAR is important because it's the ready energy the corals need to consume and grow. I personally use 14,000K bulbs and enjoy the blue that I'm getting out of my bulbs. It's not as intense as the 20K, but it's not as white as the 10K.

I hope that helps. I'm doing PAR measurements myself and hope to be posting some #'s here in a few days.

Happy reefing!
agree with ya here Kellsindell. I personally use 12,000K or 14,000K, with atenics of course, but over all this was a pretty good explanation. Good thread
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