Question: 120W EverGrow Full Spectrum Dimmable LED from Ebay

Ajmal C said:
I'm too afraid I'll mess up the connection to even consider soldering. The lights I've been using seem to work well on my coral.

But I'm glad to know that I can turn to you for some direction, Mamy switch out some of the higher K LED's. Is there some rewiring involved?
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It is really easy. There are no wires, just contact points. You just melt the existing solder and take off the existing diode. Then, just tack the new diode onto the contact points. There really isn't anything to mess up.
 
Spartanman22 said:
I am looking at one of these for my DT I just can't decide between this or the OR T247. Would you mind giving some impressions of the fixture both function and aesthetics (I would be hanging mine over a rimless tank). Thanks!
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Mine are exactly same as the ones in the video.
 
pusanpa said:
http://www.3reef.com/threads/poor-mans-full-spectrum-dimmable-120w-led-light-review.150691/

I decided to get the lights after reading this thread.
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Hey, I am a little confused here, I went to the thread and those are the exact ones I suggested for you, sold by supermart168. They have the same lights under varying titles (probably a marketing thing, you can see all their postings in their store).

So you changed your mind? Weren't the ones you wanted delivered all ready?
 
I went with those because it seemed to be newer version and look nicer as well.
Imo, they share the same internals.
 
pusanpa said:
I went with those because it seemed to be newer version and look nicer as well.
Imo, they share the same internals.
Click to expand...

Hey just got my LED in. The changed it a little; they took out the 4 x 410nm LEd's and replaced them with 440nm LED's

Are the 410nm important? I've read that near UV wavelengths cause the coral to make more of the fluorescing proteins that make them color up. Can any body second that.
 
Ajmal C said:
Hey just got my LED in. The changed it a little; they took out the 4 x 410nm LEd's and replaced them with 440nm LED's

Are the 410nm important? I've read that near UV wavelengths cause the coral to make more of the fluorescing proteins that make them color up. Can any body second that.
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Yes and No

Corals do have pigments that reflect the 410-420nm. Given the type of 410-420nm they use a couple is moot as the more intense the light the more pigments the corals produce to reflect this light. Photohinibition occurs around 350-500 PAR. The most colourful Reefs I've seen have a max intensity twice this.

Here is a chart from our site that may help.

Pigments_zpsa93ae399.jpg


Bill
 
[MENTION=144]wld1783[/MENTION] thanks, seems the other wavelengths are more important and, if I am to understand correctly, the intensity (PAR {photo synthetically Active Radiation}) is paramount.
 
Here are a couple more charts that we used for optimizing our fixture.

Note the Photosynthetic Range and compare this to the Spectrum Penetration.
PhotoWavelength_zps40addd13.jpg


PhotoPenetration_zpsbff1a372.jpg


Bill
 
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