3 Watt Full Spectrum LED's - The Planted Tank Forum
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post #1 of 18 (permalink) Old 11-14-2015, 10:20 PM Thread Starter
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3 Watt Full Spectrum LED's

Recently added 6 full spectrum LED's to a 40Long fixture.
My 6 - 385nm UV's bit the dust(cheap), decided to give these a try.
It has been a week now with some noticeable difference.
New growth is more robust on stems, floaters went crazy.
I have this channel dimmed down quite a bit.
Not the most appealing color, heavy on the pink/violet.

18 watts of this is now incorporated in my 80 watt fixture.
Rated @ 400-840nm.

Anyone else trying these???


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post #2 of 18 (permalink) Old 11-17-2015, 12:34 AM Thread Starter
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JeffK usually has something to say about LED's
Looking for opinions here.


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post #3 of 18 (permalink) Old 11-17-2015, 12:45 AM
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The BeamsWork thread has someone who switched them out.
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post #4 of 18 (permalink) Old 11-17-2015, 02:36 AM
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Quote:
Originally Posted by Maryland Guppy View Post
JeffK usually has something to say about LED's
Looking for opinions here.

well, calling them "full spectrum" is a bit misleading..



Concept is sound. Blue LED w/ deep red phosphors..

400-840 is a stretch as well..

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Last edited by jeffkrol; 11-17-2015 at 02:50 AM. Reason: edit
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post #5 of 18 (permalink) Old 11-18-2015, 12:44 AM Thread Starter
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I realize it is misleading.
Growth has really taken off and required dimming that channel.
Duckweed has since exploded. Netting a lot of it.
But these LED lamps do have something to offer.

I am trying now to blend them with 10K lamps.
New fixture attempt, you never know?


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post #6 of 18 (permalink) Old 11-18-2015, 01:31 AM
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Quote:
Originally Posted by Maryland Guppy View Post
I realize it is misleading.
Growth has really taken off and required dimming that channel.
Duckweed has since exploded. Netting a lot of it.
But these LED lamps do have something to offer.

I am trying now to blend them with 10K lamps.
New fixture attempt, you never know?
you can create "white" by adding a cyan LED next to it..


Ocean Coral White - LEDGroupBuy.com
royal blue/cyan/660nm red

Idea for some correction...
cyan and 4000k..


note it is still quite blue tinted (20000+ K).
MORE 4000k:



80 CRI 6945K

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Last edited by jeffkrol; 11-18-2015 at 01:48 AM. Reason: edit
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post #7 of 18 (permalink) Old 11-20-2015, 12:22 AM Thread Starter
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All my duckweed has doubled in two days.
Easy 80% of the surface covered.
Unknown rotala has grown an inch.
These LED's have made a difference.
BBA has not been pearling either, like in the past.
It is an experiment again.
This new burst in growth is running @ 25% on the old UV channel.

When the UV's @ 385nm were at peak performance no BBA.
As they dimmed and degraded BBA at highest levels in tank began.
Maybe the swap to full spectrum will help?
When new the UV channel ran at full 700mA.

New fixture experiment is a 7 led heatsink disk.
It includes 3 full spectrum and 4-10K @ 24VDC @ 700mA.
It is much more pink than I would like @ 50% and under.
Once over 50% intensity it looks great.

Intended to use these on a 75 gallon newly acquired tank.
Building 3 fixtures with two disks each. 42 watts per fixture.
126 watts for the entire tank. I always over-build and dim though.
I don't try to target high light and use ferts based on water testing.
I have managed to avoid the algae farm method.

More 3 watt LED's coming, "The China Wait Game"


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post #8 of 18 (permalink) Old 11-22-2015, 03:22 PM
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To balance color, it's important to understand that light is additive. It doesn't degrade or lose intensity when it's blended with other colors. Thus, a better color rendition will be attained not by using 10000K LEDs, which is a blue LED with very small amounts of yellow phosphor, but with neutral white LEDs, probably at a 8:2 ratio with the FS, with some supplementary violet and 470n, blue to balance out the low blue spectra.
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post #9 of 18 (permalink) Old 11-22-2015, 03:45 PM Thread Starter
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Thought of this too.
I have some RB's, 4K, and 6.5K in house.
Not sure what will end up on these disks yet.


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post #10 of 18 (permalink) Old 11-29-2015, 04:35 AM
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I would try adding lime leds to brighten it up and fill the gap those red/blues have left.
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post #11 of 18 (permalink) Old 11-29-2015, 06:58 AM
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Quote:
Originally Posted by skanderson View Post
I would try adding lime leds to brighten it up and fill the gap those red/blues have left.


By 500nm you have little power left. not a good substitute for cyan/blue though a visual brightener to the human eye.
After 650nm not the best for deep red addition either, but not too bad for orangy-red...

http://www.nano-reef.com/topic/35653...s-are-dubious/

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post #12 of 18 (permalink) Old 11-29-2015, 09:13 PM
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good point maybe a couple cool blues as well. but I would try lime first as it seems to fill in about 90 percent of the hole in those other emitters spectrum.
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post #13 of 18 (permalink) Old 11-30-2015, 04:50 AM
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good point maybe a couple cool blues as well. but I would try lime first as it seems to fill in about 90 percent of the hole in those other emitters spectrum.
not according to this composite. Peaks not to scale and horz. axis an approx but it will give you an idea.
no red, cyan,blue, or violet...





Best description would be eye candy..

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post #14 of 18 (permalink) Old 01-06-2016, 08:44 AM
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Thought of this too.
I have some RB's, 4K, and 6.5K in house.
Not sure what will end up on these disks yet.
Any progress on the discs and fs led's?

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post #15 of 18 (permalink) Old 01-06-2016, 09:38 AM Thread Starter
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Some progress with 1st China batch.
Tested and didn't like the color, not appealing to the human eye.
I have to post more after work today with a pic.
Without a meter I feel as though I am working in the dark.

PAR meter that is.
Here is where it's at.
1 - 700mA LDD-H per fixture @ 48VDC
3 full spectrum, 3-10K, and 1-3K in the middle.
The spectrum is some what tolerable???
42 watts per fixture, 3 will go over a 75 gallon lo tech.
In the high tech the full spectrum are growing most plants like mad.
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Last edited by Maryland Guppy; 01-06-2016 at 11:10 PM. Reason: edit
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