I actually did an experiment on this for a school science fair, we won silver by like .5 % then we got a gold at the toronto science fair and went on to canada wide where we won nothing but where marked great.
We where using incandescent lights ( the coloured ones ) so not exzactly the same but good to use for a refrence. There where a total of 9 jars 3 under green, 3 under blue
and 3 under amber
For a bit of backgroung information Amber wich is close to the 650- 680 nm ( nano meter) range is the peak for aquatic plant Photosynthesis, this type of lighting can only be used if there is a supply of C02
plants appear green because the reflect green light, so a green light will just reflect off the leaves causing little growth
Blue light is used for general growth as well as algae growth it can be used Whether there is co2 or not
so here is how our project went... under each light there would be 3 jars. One with 02 ( supplied from Oxygen pump ) one would have CO2 ( diy yeast ect ) and one would be left untouched ( other than by the light)
here is what we found out
Under O2 blue grew best by far, amber only grew about 2 grams,and green did not grow at all
With co2 amber grew best by 4 grams, blue grew better than with 02, and green grew 2 grams
With nothing ( this control would have a medium amount of 02 / C02 ) Blue grew best by 2 grams and only 1 gram more than with O2, yellow grew 2 grams less than with co2 and green grew 1 gram
Sorry but im at my cottage and i dont have the original results i can only remember some of the weights, Sorry if this is confusing as well,
As you can see blue light ( close to the atnics nm range ) will grow plants fine mabey not as well as a 6700 k or whatever ,this is just what i have discovered.
in the book AQUARIUM PLANTS : peter hiscock he states that "the colours of physical objects we see around us are generated by the colour of light reflected off them all other colours of the spectrum are absorbed this is why the sea appears blue, because bluse light is energetic and less readily absorbed by water"
" shorter wavelengths are more energetic than longer wavelengths, and it is the more energetic light that is able to pass through the water quickly"
"plants are more likely to recieve greater amounts of blue light than red" due to this
Here is the one that i really like
"The photosynthetic pigment clorophyll, used by the majority of plants for photosynthesis , traps mostly blue and red light, although it is more efficent at trapping red light at aroung 650-675nm. Blue light is used just as much as red light simpily because it is far more avalable , is stronger in natural sunlight , and passes through water more easily. In the aquarium , artificial light should peak , ideally , in the red area ao the spectrum althought this can produce an undesireable appearance. Artificial light with a strong blue and red spectrum is much more appealing to our eyes and will still provide the plants with a suitable light. Its worth remembering that stron blue light will also promote algal growth , so aim for a balance of red and blue light "
I'm not really set on wether atnics can be used to your advantage or not i just wanted to bring some info of mine to your attention, Good luck