Thanks for showing the right info here.
So, if there is more blue, it doesn't help photosynthesis, is it? Looks like I got to read the wrong information on plants doing better photosynthesis with more blue.
I am kind of struggling to keep the red plants red. So, trying different combinations to make it work. Now, it looks all green but very healthy plants with proper EI dosing routine and water changes. Any inputs will be well taken! :-
Err.. not quite.. and yes stay away a bit from "color" temp" as it is almost meaningless to plants.. as it is an average color output of multiple wavelengths (some important some not)...
Blue and red mixed would produce "ideal" spectrum for "ideal plants" but of course things are not that simple.. as you can see from the above chart..
Technically plants do "better" w/ a lot of red in the correct wavelength and less blue at the correct wavelength..
I believe it is a 3:1 ratio.. BUT it makes your tank not "natural" looking. which is why we "compromise" in spectrum..and to keep your plants from looking "washed out"
W/ just actinic blue/10000K white your plants will look white till you take them out of that light and see them in "daylight".... because absorption far exceeds reflection (esp. the green "reflection"..since little is present)
Oh w/ that much blue be very careful your plants aren't green from algae (personal experience)
Think pink is the new "white".. (sorry just a mild inside joke.. it used to be pumpkin orange, long story.. read my past posts if you really want an answer..)
As to red red.. well a lot will depend on visual perception based on color temp of your light.. and to be honest, I'm not quite sure it is just intensity or certain wavelengths that would add the pigment red (which you still will not "see" if your light has no red to reflect back..) Most theory is red is a supplement pigment used to absorb high intensity light to avoid damage to chlorophyll, but this is still not the whole answer probably... and is species dependent.
A bit on red pigment production:
Environmental factors affecting anthocyanin production include light (intensity and wavelength, with blue and UV being most effective), temperature, water and carbohydrate levels, and the concentrations of the elements nitrogen, phosphorous and boron in the growth medium. Anthocyanin production can be induced by light, blue being the most effective color. Low light levels also induce the formation of different flavonoid pigments, which is another interesting adaptive response on the part of plants.
More than five enzymes are thus required to synthesize these pigments, each working in concert. Any even minor disruption in any of the mechanism of these enzymes by either genetic or environmental factors would halt anthocyanin production.
sorry I'm an annoying fact collector............