Royal Blue LED's?

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Deltec
Well in scientific Terms:
Quoted from the article:
Feature Article: Light in the Reef Aquaria
By Dmitry Karpenko, Vahe Ganapetyan. (you can read here

"During hundreds of millions years of evolution marine photosynthetic organisms adapted to best utilize mainly the violet and blue parts of the spectrum, which is more abundant in their environment, and are not very sensitive to the red spectrum (which, in contrast, is most actively utilized by terrestrial plants). Symbiotic zooxanthellae in marine photosynthetic organisms are primitive Pyrrophyta algae [5] containing mainly chlorophyll a and c and carotenoid pigments (peridinine, xanthins, etc) which exhibit strong absorption in the blue-green part of the spectrum. [6,7,22]. Fig. 4 [22] demonstrates light adsorption by zooxanthellae."


I suggest you read the whole article in order to understand on the scientific level...


Now the basic hobbiest answer: Blue light helps with coloration of the coral with zooxanthelle.
 
In the ocean blue and violet are the last of the color spectrum to be dissipated by the water. Red being one of the first wavelengths dissipated, so corals are more used to receiving blue wavelengths in higher volume than reds or greens for example. Also why the ocean looks blue!

Also you'll get a more appealing look to your eye, compared to a yellowish 6500k look.

The royal blue especially adds more "pop" to your colors for sure.
 
Royal Blue are your Primary Growth LED. The 420nm a more efficient photosynthetically but a quality Royal Blue line the upper Bins of the Cree XT-E offer more PAR per Watt.

The 450nm Royal Blues offer significantly more colour pop than the 465nm so shoose your bins wisely.

Bill
 
And this is why people complain of corals bleaching with LED's. IF corals do not get acclimated to the lighting properly, the algae within the tissues of the coral are bombarded with PUR and over reproduce, over oxygenating the tissue and creating heat. It is important to understand that Blue and White LEDs peak in the 430nm to 460nm range. I love my LEDs and would never go back, but I hear a lot of people complaining because they didn't take the time to properly acclimate. A lot of PAR numbers , and brightness comparisons, but in reality, these systems built have more PUR then it looks

The algae in corals primarily only use chlorophyll "A" which requires the lower end of the spectrum for photosynthesis.



Blue LED's



White LEDs



So just be careful, and remember that just because it doesn't "LOOK" as bright the PUR levels are sure to be there. Slowly increase the output over a few weeks until you see the corals getting the color you want.
 
Well it's taken me 9 months to reach 60% max on my blue and 14% max on my whites. I'm a very slow light acclimator-lol.

I really don't understand what the above charts are telling me. :(
 
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Top Shelf Aquatics
I personally think aclimation is bull have been running the radion for over a year now 12 inches from the water at 100 percent whites at 50 reds and greens at 5% since they are basically useless to corals. I also think everyone should read what advanced aquarist says about red leds and how they affect corals. Leds are intense so if your water quality isn't spot on the leds are going to show you by bleaching out your corals. I have a little bit of everything in my tank and the colors are amazing
 
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Tidal Gardens
60squared said:
I personally think aclimation is bull have been running the radion for over a year now 12 inches from the water at 100 percent whites at 50 reds and greens at 5% since they are basically useless to corals. I also think everyone should read what advanced aquarist says about red leds and how they affect corals. Leds are intense so if your water quality isn't spot on the leds are going to show you by bleaching out your corals. I have a little bit of everything in my tank and the colors are amazing
Click to expand...

Just remember the Radion is at best equal to a 250 watt MH in terms of PAR. Most people set theirs to a 175 watt MH Equivalent which is fine for a shallow tank.

There is a lot of debate on the Red Spectrum. A little 6630-660nm is fine for shallow corals. Too much in my opinion is not helpful.

In this hobby water quality has to be 100% and add to the mix warfare either chemical or direct attack from neighboring corals.

Not many hobbies have so many things one has to have right to be successful.

Bill
 
Not to insult your intelligence Mr bill but I have never seen a 250 halide put down over 1200 par. I agree that some pigments mostly chlorophyll A use 630-660 nm range being said they receive only a small ammont of it 5 percent is doing me just fine
 
View ReefStash's latest YouTube video!
Top Shelf Aquatics
Lol I would imagine, your probably just keeping them alive not growing them, have a good one
 
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