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Help with leds. Problem with blue, pink and red corals


bamby

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Hi guys i have a 40 breeder tank with 12 Luxeon M RB and 3 Bridgelux BXRA-40E0950-B-03(4000K). My current problem its that the Pink and red corals look dark you cant see the pink pop nor the red also blue corals are almost unseen they look kind o black or very dark blue. My greens and oranges are perfect they pop like crazy.

 

I was looking for some leds to fix this and see people using HV leds, Blue Leds and some limes. Will this fix my problem or should i go with 2 T5HO for complementing the colors?

 

Im not an expert on this if you can point me the right combination il be very greatfull.

 

thanks

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The way you are describing things makes it sound like you are running very blue heavy with only a little white. Would that be correct? If so, you need to define whether these colors that you say aren't looking that great fluorescing colors, or reflected colors. Fluorescing reds and pinks can be dealt with by using blue (470nm) and cyan (490nm). Reflected reds and pinks should be taken care of with the Bridgelux LEDs, as they are pretty good on the red end of the spectrum. If you are running blue heavy, then you are going to have a hard time with reflected colors unless you start turning up the whites. Adding red/deep red will help only slightly, and will give the light more of a purple cast than anything else. Lime will only help to make the light brighter to your eye and won't really help with color rendering.

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Well im runing the RB at 72% with steve leds lens. The bridgelux are at 82% but they dont have any lens. The tank looks very bright. I dont have any blue or cyan should i add some to see if i have any improvment?

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What's the reason for running optics on the RB and not the white?

 

Blue and cyan will help with fluorescing colors, but not reflected. You didn't specify which, like I asked you to ;)

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Sorry don't know the difference between fluorescing vs a reflected colors. I don't install lens on the bridgelux because i can only find 40 or 45 degree lenses don't remember right know. I was not able to find 80 degrees lens Here are some examples:

 

I buy this purple bonsai coral it looked like in the photo when i get it from the LFS. Its has been with me for a while it grows and has a very nice polip extension but you cant see his colors its almost like a full dark blue purple with very green polyps but when i turn off the light and light him with my phone flashlight you can see that he has his original colors presents.

 

IMG_7101_grande.jpg?1665

 

This is other acro i have its a light bright pink or was in the LFS. In my tank it looks kind of a of a more deep dark pink but whit green spots. Dont know why it develop this green spots.

 

180_pink_table1.jpg

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This is a known problem. The best way to eliminate it - using the PC Amber LED.

 

BTW, after solving this problem you may see also similar problem. If, of course, you have sharp enough eyesight :) The only one way to solve all of them - to build the full-spectrum LED assemblies. Any other way can't provide the good enough result. Forewarned is forearmed :)

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Well today i start tweaking the leds by reducing the RB and bumping the whites i saw an improvement not 100% satisfied . Will be ordering lens so i dont have to bump too high the whites and turn down the RB. i started to look for the Blue 470nm and only could find 465nm-470nm cree xpe2. Also in the cyan 490nm only could find 495nm-500nm luxeon ES cyan. its that close enough?

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jedimasterben

This is a known problem. The best way to eliminate it - using the PC Amber LED.

..... what?

 

Bridgelux%252520vero%252520white.png

 

 

:huh:

Rebel%252520and%252520ES%252520lime%2525

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jedimasterben

Well today i start tweaking the leds by reducing the RB and bumping the whites i saw an improvement not 100% satisfied . Will be ordering lens so i dont have to bump too high the whites and turn down the RB. i started to look for the Blue 470nm and only could find 465nm-470nm cree xpe2. Also in the cyan 490nm only could find 495nm-500nm luxeon ES cyan. its that close enough?

LEDgroupbuy sells the 'best' single XPE2 chips in that range, they have no hint of green like most 'standard blue' chips you'll see. The Rebel cyan (no such thing as 'Luxeon ES') you are looking at is what you want for cyan. I would also recommend a bit of lime, as well, you don't need very much of it to get the effect. They won't help you with those colors (only upping the whites will), but they will help in the grand scheme of things :)

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jedimasterben

Thanks as for how much will 12 blue( 4 per cluster) 6 cyan(2 per cluster) and 4 limes will be sufficient?

Yes, that should do well. Though to keep it symmetrical I'd probably do six lime, as well. Put them on a 500-700mA driver and you're all set. :)

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jedimasterben

Please check your graphics - radiation of PC Amber not same as "warm part" of 3000K and 4000K LEDs.

:huh:

 

bxra%252520pca.png

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jedimasterben, you seen how works PC Amber in terms of the visual impression on spectra, that have a lot of short-wavelength radiation? If no, I advice you to check this. You will be so impressed, especially for red non-fluorescent corals.

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jedimasterben

Why would I want to add another LED color to the array when I have a single LED that covers that spectra and many others with more flux?

 

rebel%252520es%2525202700k%25252095cri.p

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You may add exact color that you need by using the PC Amber, but you can't do this, if you will use the warm/neutral white LED.


By the way, the visible color of the PC Amber is very far from the warm/neutral white ;)

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