MH FOR CHEAP 250,400

[Acro]

Quote from Steve Tyree's Book RBSC

A light field that was primarily blue would mirror what the corals experience in clean ocean waters at depths from 10 meters and deeper. At depths from 5 to 10 meters, the light is mostly blue/green.

The zooxanthellae within these corals all contain caroteniods which only absorb blue light and of course also contain the chlorophyll's that absorb much more blue light then red.

And one more.

The study also determined that low levels of blue light can acheive rates of light-saturated photosynthesis(peak operation) that are equivalent to those reached by corals grown in full sunlight.