The numbers on mh lights?
- Thread starter mavmike72
- Start date
geoj
Active Member
The kelvin is often used in the measure of the color temperature of light sources. Color temperature is based upon the principle that a black body radiator emits light whose color depends on the temperature of the radiator.
These colors that TeresaQ mention are the colors we perceive with are eyes 6500 yellow, 10k white, 14k white blue, and 20 k blue.
Then there is the, Photosynthetically active radiation, often abbreviated PAR, designates the spectral range (wave band) of solar radiation from 400 to 700 nanometers that photosynthetic organisms are able to use in the process of photosynthesis. This spectral region corresponds more or less with the range of light visible to the human eye.
Each light souce has a PAR spectral range and Kelvin color temp. The Kelvin is the color of the light we see and the PAR is the color bands that make up the light.
These colors that TeresaQ mention are the colors we perceive with are eyes 6500 yellow, 10k white, 14k white blue, and 20 k blue.
Then there is the, Photosynthetically active radiation, often abbreviated PAR, designates the spectral range (wave band) of solar radiation from 400 to 700 nanometers that photosynthetic organisms are able to use in the process of photosynthesis. This spectral region corresponds more or less with the range of light visible to the human eye.
Each light souce has a PAR spectral range and Kelvin color temp. The Kelvin is the color of the light we see and the PAR is the color bands that make up the light.
geoj
Active Member
Originally Posted by mavmike72
http:///forum/post/3225666
Thanks......so if im gonna run blue t5's then a 14k would be a good choose for mh.
I like to do it that way, I have a 14k 250w MH and some blue LEDs
http:///forum/post/3225666
Thanks......so if im gonna run blue t5's then a 14k would be a good choose for mh.
I like to do it that way, I have a 14k 250w MH and some blue LEDs
mavmike72
Member
Originally Posted by GeoJ
http:///forum/post/3226052
I like to do it that way, I have a 14k 250w MH and some blue LEDs
So do i need blue leds instead? Are they better? Do you suggest some leds for a 75 tank?
http:///forum/post/3226052
I like to do it that way, I have a 14k 250w MH and some blue LEDs
So do i need blue leds instead? Are they better? Do you suggest some leds for a 75 tank?
geoj
Active Member
No, I think right now some T5s each side of the MH would be more economical for a 75gal. In 2-3 years hopefully the price of LEDs will come down and that would be the time to go for them IMO. I have a 25gal with a 250w MH, plenty of light to put SPS under. The LEDs in my tank just provide light to see by when the MH is out.
