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07/29/2019, 09:25 PM
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#1 |
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Registered Member
Join Date: Jan 2017
Posts: 6
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Is it just my eyes?
Question:
I was in my LFS the other day and realized something. They were using t5 and I believe Radions over their frag tanks, and they get s spectrum that I am trying to come close to with my black box. The issue is that with the black boxes, when the white channel is on, it is WHITE. All of the florescence is gone. Even at 1%. The blues look good, but I am trying to get more of an ice blue look. At the LFS, the tanks are obviously blue dominant, but you can still see colors, not just the florescence. Am I making any sense? I am thinking that I need to change out the whites for different wavelengths or maybe for other blues.... |
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07/30/2019, 04:33 AM
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#2 |
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Registered Member
Join Date: Sep 2003
Location: North Carolina
Posts: 20,050
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You are making total sense..
Many are going with a T5/LED combo to get the light/pop they like.. The black box LEDs do have quite a bit of white to them.. Many people like the "natural/full spectrum" look while others want a heavier "blue" tank.. Not all black box LEDs are created equal either though.. Some are better than others in their LED choices.
__________________
Who me? |
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07/30/2019, 11:46 PM
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#3 | |
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Registered Member
Join Date: Apr 2013
Posts: 1,793
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Quote:
Low CRI.. so any reflective pigments below say blue are pretty well lost. The diode itself is a blue emitter w/ a smidge of a broad band yellow phosphor. Simulated 10000K diode  As to fluorescent pigments, well even low white will mask those quite a bit I believe. Eye thing and strength of the fluorescence. Radions have lone RGB diodes and their whites are probably lower Kelvin in the 8000-6500 range and also one warm white (rich in red).. t5's usually have RGB phosphors and some "natural" green and amber spikes from the mercury.. Just need better whites.. though those are not easy to find w/ black boxes.. I know some have red and green thrown in but .....pretty low. "Fixing" them is probably a crap shoot as to diode quality..or even what you need.. |
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07/31/2019, 01:22 PM
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#4 |
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Registered Member
Join Date: Jan 2017
Posts: 6
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Thanks All.
So would changing out some of the soft whites for a high K white LED help? I have a Viparspectra. What I would like is for the blue channel to be at about 60% (which it is) but the white channel to be turned down very low yet still show colors but not be totally dominating. |
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08/01/2019, 03:07 PM
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#5 | |||
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Registered Member
Join Date: Apr 2013
Posts: 1,793
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Quote:
 This one has high K whites w/ 2 red, 2 green.. What is yours? I'll guess it's more like this: Quote:
I can only suggest theoretical improvements but this is a starting point.. Replace 6 whites w/ 6 cyan..bluer the cyan the better.. Ignore the royal blues as they were used to make the whites higher K than I had available. Quote:
 this would be the white channels "tone" https://www.color-hex.com/color/addaff hopefully some bb modifiers in real life will chime in.. 
Last edited by oreo57; 08/01/2019 at 03:29 PM. |
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08/02/2019, 10:26 AM
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#6 |
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Registered Member
Join Date: Apr 2013
Posts: 1,793
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https://www.*********.com/threads/th...thread.283942/
that may be of interest.. Pretty sure link will be censored though.. example.. [IMG]https://www.*********.com/data/attachments/558/558406-dc43cdaa9d2688948471681cbb1f14ad.jpg[/IMG] Last edited by oreo57; 08/02/2019 at 10:34 AM. |
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