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post #17 of (permalink) Old 11-27-2012, 04:16 AM
Build My LED
Algae Grower
Join Date: Nov 2012
Location: Austin, Texas
Posts: 68
Originally Posted by Steve001 View Post
I'll take a look once you have it set up.
Do you know offhand what the color temperature is with that configuration ?

While replying I was recalling when I was a volunteer at the Baltimore National Aquarium back in the late 90's even then I foresaw the practical application of leds in planted tanks.
Of course. I built the spreadsheet with the algorithms, so I get to see all of the metrics It was a 5500K spectrum, but I personally don't pay attention to the kelvin scale. By itself, it doesn't tell you anything about a lighting system, as you can have multiple color lights that are the same CCT (i.e. kelvin temp). Various lights can look completely different, even though they have the exact same kelvin temp. I prefer to look at the X and Y chromaticity coordinates and the spectrum, which can be used to calculate the CRI and color saturation effects.

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