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Old 09-09-2011, 07:24 PM   #41
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And par is generally higher in colored bulbs is that not right? I am learning along with everyone else.
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Old 09-09-2011, 07:28 PM   #42
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colored? are you referring to color temperature? all light has a color, but in our hobby, the lower the K, or kelvin, or color temp, the higher the PAR (generally speaking). in other words, you have 2 of the same quality lamps, one is 10,000k and the other is 20,000k. the 10k lamp will have considerably higher PAR.

http://en.wikipedia.org/wiki/Photosy...tive_radiation
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Old 09-09-2011, 07:32 PM   #43
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Then what is the prupose of actinics? I thought it was for coral growth and that THAT depended on par. I'm curious cause I'm just running the 20k bulb in my 20g and I want coral growth. I am also considering skipping leds and buying a regular MH fixture with actinci support for the coral growth. And actinic are blue so.....see where I'm going with this line of questions? I may not be asking the right questions though lol
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Old 09-09-2011, 08:01 PM   #44
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no. that's not true. if you have enough PAR, you'll get maximum growth, period. no matter what the color of the bulb you are using is. since all of our lamps are full spectrum, the actinics are basically for looks. growth can be achieved with a 20k bulb, if the intensity is there.
generally, you'll get more growth out of a 10k bulb, because it has more PAR. then you use your blues to make the tank look good and the corals appear to fluoresce.
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Old 09-09-2011, 08:08 PM   #45
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Ok, so it;'s not necessary for me to add actinic support for a mh 20k bulb then? as long as its putting out enough par? I thought the corals needed the blue spectrum for growth as well, not even sure how I have that idea in my head. lol
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Old 09-09-2011, 08:11 PM   #46
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you do not need actinic supplementation with a 20k lamp.
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Old 09-09-2011, 08:13 PM   #47
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As a frame of referrance, the fluorescent fixture you find in most offices have lamps (a bulb is something you plant in the ground) that are 35,000 degrees Kelvin.
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Old 09-09-2011, 10:21 PM   #48
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Quote:
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As a frame of referrance, the fluorescent fixture you find in most offices have lamps (a bulb is something you plant in the ground) that are 35,000 degrees Kelvin.
Well I was learning something until you hit with this. Are you like some of the gun guys? a magazine fits in a gun, a clip does not?
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Old 09-09-2011, 11:25 PM   #49
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Quote:
Originally Posted by rdnelson99 View Post
As a frame of referrance, the fluorescent fixture you find in most offices have lamps (a bulb is something you plant in the ground) that are 35,000 degrees Kelvin.
you mean 3,500.
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Old 09-09-2011, 11:27 PM   #50
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you mean 3,500.


LOL I missed that mistake. Funny when someone tries to "correct" you one something and then makes an even bigger one.
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