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Old 04-23-2012, 06:11 PM   #101
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The violet? Ultra violet? Anything under 400nm is ultraviolet I like 400 it is also the same wavelength as moonlight I guess. Ultraviolet I don't believe to have too much to do with growth but I do like the glow it gives the tank. I think t5 aticnic are 480nm I think I am way off there Idk. I used a 470nm led on my test light I am building. I am sure there was a reason but I don't remember right now.
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Old 04-23-2012, 06:45 PM   #102
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The violet? Ultra violet? Anything under 400nm is ultraviolet I like 400 it is also the same wavelength as moonlight I guess. Ultraviolet I don't believe to have too much to do with growth but I do like the glow it gives the tank. I think t5 aticnic are 480nm I think I am way off there Idk. I used a 470nm led on my test light I am building. I am sure there was a reason but I don't remember right now.


Violet is not UV.. Look here is the Violet verses UV

VIOLET

UV - I already have two and they are for coral color or in theory... UV creates a "sun burn" like to the coralsd giving them more colors...


But now I'm looking at it again.. I thing I need higher 400's which is the cyan & pinkleds.. I think I read somewhere sps coral need 410-510 wave length but could be wrong.
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Old 04-23-2012, 07:37 PM   #103
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400nm is in the UV spectrum it is at the very tippy top LOL.

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Old 04-23-2012, 08:35 PM   #104
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400nm is in the UV spectrum it is at the very tippy top LOL.
True but the sun produces alot of uv and there is still a big diffence between 399nm to 402nm as far as useable nm for corals.. at least IMO

Idk. Just pulling straws.. I still dont think my coral problem is my lights. I'm hoping I just wasnt ready. Mean parameter weren't stable.
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Old 04-23-2012, 08:41 PM   #105
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Yeah I just enjoy talking lights.
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Old 04-24-2012, 05:34 PM   #106
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Why do you insist on making this an argument I have researched this. 480 nm is blue 20000k is white. I have have 20000k leds they r white. 15000k bulbs in a t5 is white the blue antinic t5 is a 480 nm bulb. The nm refer to color not. Why don't you think about if you run mh bulds that run 20000k do they turn your tank blue NO. So Idk what your deal is or what kinda lights your looking at. I was making a suggestion. This is aquarium advice is it not. This argument is of topic and not needed. If he decides to follow my advice then he does either it works or not. Its a forum that has lot of opinions. I entitle you to yours. Entitle me to mine and shut-up.
Ok. I'm not going to be nice either then. You are way off. You don't have a clue what you are talking about. Natural daylight is around 6000k, not 30, 000k.
A 30,000k lamp is GREEN.
Yes, 20k lamps over a tank makes it very blue. 20k LEDs are not white, they are blue.
I have no choice but to correct folks that spout off poor advice.
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Old 04-24-2012, 05:57 PM   #107
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Quit arguing on this thread I don't really give a rats *** what u think 30000k hid automotive lamps r blue because they use xenon gas. Metal halide can be the same temperature as a high pressure sodium and they r 2 different colors because of the gas. color itself is not dependent on whether its 3000k or 20000 the sky is blue because the sun is no it is blue because of the gases. I wanna know how I bought 20000k white light leds according to you the should be blue or something. If they were in the mid to upper 400nm range they would be. I have 12000k t5 apparently the should be blue amazingly they r white OMG. My whole life has just turned upside-down
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Old 04-24-2012, 06:01 PM   #108
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Green HID 30,000K HID Kit Green Single Beam Headlights

20k is 20k...it's not two different colors because of anything. it's the same color.

I have never seen daylight that looks like this...
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Old 04-24-2012, 06:26 PM   #109
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So anyway as you show a link to 30000k green hid lights then a link to a YouTube video of 30000k casting a blue glow you prove what?
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Old 04-24-2012, 07:04 PM   #110
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Anyway? What exactly do you mean by anyway? The fact is that 30,000k is no where near the color of natural daylight. it's incorrect to be telling people that, and it's also incorrect to be telling people a change in kelvin is going to allow them to grow stony corals.
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