Mimic Radium 20K

[scriptdaddy]

Hi,

I was wondering if anyone had managed to create a light project that mimic's a Radium 20K MH bulb?

I've had a play around and attempted to mimic the light spectrum of a Radium 20K, but have so far been unsuccessful. I wondered if anyone else has had any luck?

If you have, it would be great if you could screenshot your values.

Thanks
Ben

[Mark426]

I am sure most of us Mitras (all versions) owners would love this info. This is one on the "most asked" questions on the web, as far as settings/spectrums go.

I would think that GHL has or has access to the equipment necessary to come up with a answer to this question. Come on GHL, give us some help.

[PIWAWT]

you need a HV Version, only these has more as 20000K. Then you can use the LightComposer to mix the Colors to 20K

[scriptdaddy]

Yep, I have the HV version (6100HV) and I've used the spectrum graphs from a 20K Radium to try and follow the plots, but I've been somewhat unsuccessful. One of the biggest issues is that the Light Composer Graph (y and x-axis) doesn't match the spectrum graphs I've found.

[PIWAWT]

is this 7641 the graph you mean?

One of the biggest issues is that the Light Composer Graph (y and x-axis) doesn't match the spectrum graphs I've found.
This in not a problem, the peaks are nearly zero. You only need the "Master Peaks" for a correctly Spectrum. The Rest is a "cosmetic deviation", and not relevant.
spectrums graphs are near the reality, but not absolute. After a few days in using a radium lamp the Spectrum is different from the first day

Here an example with 20000K (6100HV)
7642

[scriptdaddy]

Thanks for the prompt response.

When I try and utilise the same peaks as a Radium, which I believe has peaks at UV, Royal Blue, Blue, Cool White, Green, Yellow and Hyper Red, I end up with a colour temperature closer to 15K than I do running at 20K. I was told though, that a 20K Radium has the look of a 14K temperature bulb, so I wonder if it's too much of an issue running at the 15K?

Thoughts?

[PIWAWT]

20K has a range of 14K?
There is a difference between what can be seen by the human eye, and what light actually radiates.

7644

Info:
More Kelvin, more blue. Blue penetrates deeper into the water, as for example, red
15K are more than enough for the reef, and are a good mix. Even 10K would be enough

[scriptdaddy]

Again, thank you for the information.

I'll stick with the 15K and be happy with it :)