How to reduce purple look with custom LED layout

Discussion in 'LED Aquarium Lighting' started by kindcorals, Dec 17, 2012.

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  1. kindcorals

    kindcorals Plankton

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    Hey guys, I made a custom LED fixture and it is nearly the 16-20K look I want but it is too purple. I added two red leds and covering 1 red and a 2 more whites reduces the purple look some but by covering both reds and 4 whites, it gives exactly the look I want. The problem is that I want at least 1 red for my corals so how should I adjust the leds to keep 1 red but not have the purple look? I have some more blues to replace the other whites but I think blue next to the red will encourage that purple look, should the red be surrounded by white instead?

    thanks for the help guys!
     
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  3. kracer1025

    kracer1025 Skunk Shrimp

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    i would think that your red leds would need to be on their own dimmable driver that way you could lower the intensity but still obtain the benefits of running the red leds.
     
  4. kindcorals

    kindcorals Plankton

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    The reds are on the white channel, which has some blue on that channel as well. Even when blue channel is at 100%, unless the white/red channel is turned down to around 15-20%, it is purple :-/
     
  5. TurboPhish

    TurboPhish Astrea Snail

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    Are you useing 420 or 460 blues? if your useing 420s you could change some of them out to 460s to get more of a blue then purple tint
     
  6. m2434

    m2434 Giant Squid

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    Is this a CREE fixture? There is plenty of red in the CREE NW and WW LEDs, so, red is not necessary IMO and prone to issues. Red and Blue makes purple though, so, this is a sign you probably have more red than you need. Removing some red should help, or increasing the white should wash out any purple hue.