Now that's just got me confused do you feel the violet is useful or not?
Greg... I am by no means an expert on this however Im a smart guy and look at things as logically as possible.
We will never replicate the sun IMO. We can only hope to have a fixture that provides us with the essential Spectrums to the corals which others with much higher degrees than I have studied.
Also my requirements are simple:
Im in this as a hobby, not to make money so insane growth is not important to me and honestly if I was looking to aquaculture I would choose MH over LED anyday.
Low power consumption
Low heat transfer and production
Great Color "POP"
Long spans of time that dont require maintenance IE Bulb change every 6-12 months to compensate for spectrum shift
Many of these additional colors ( Red, Cyan, UV Etc...) May increase color and growth however how many times have you heard of someone with AI's Praising them for the color and growth ( all the time ) People love them. So with a fixture that can provide a little more for cheaper is great in my book. I personally dont think UV is necessary. Ive seen some nice tanks with AI's which lack the UV Spectrum.
All in all Great Price and quality Cree LED chips are good in my book and will have a review done by a well respected blogger in no time.
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Growth in my opinion falls hand in hand with coral health. So wouldn't growth be something you would look for from a light?
Also the other colors are something to consider. Especially the red. As you can see in this excerpt from a Dana Riddle Study
"
The Photosynthesis ?Pressure Relief Valve? ? The Xanthophyll Cycle:
Zooxanthellae (as well as many plants) have a protective pathway in place called the ?Xanthophyll Cycle?. In zooxanthellae, two xanthophylls are involved: Diadinoxanthin and Diatoxanthin. Blue light is absorbed by diadinoxanthin which converts it to diatoxanthin (in darkness, the cycle reverses and diatoxanthin reverts to diadinoxanthin). There are various other names for this naturally occurring process ? phycologists (those who study algae) call it Non-Photochemical Quenching (or NPQ), while others call it ?Dynamic Photoinhibition?. Whatever the name, this xanthophyll cycle offers protection against high intensity light. However, the protection offered is not unlimited. When all diadinoxanthin is converted, the cycle offers no further protection. Figure 2 shows the absorbances of these two xanthophylls. Note that only blue light is involved in the conversion and it offers no protection from other wavelengths, especially red light" Riddle, Dana-Reefs Magazine.
http://www.reefsmagazine.com/forum/...sity-requirements-shallow-tidepool-coral.html
Something to consider....