I wanted LEDs for a couple reasons.
Knowing the composition of light lets me judge the loss in the fiber optics or my method of focusing it, distance etc.. Then if I find the light makes it through I can replace the top part -- seperates at the top lens -- with a parabolic mirror or Fresnel lens.
Once you have the light coming through the fiber optics -- with natural light or with the LEDs -- you have an light source for the tank
(s) that doesn't emit heat or carry an electric current -- meaning it can be submerged. Given that LEDs are best -- at least the ones I was looking at -- if kept less than 24" from the target. Even the fancy Solaris sets are recommended for nano, which I didn't know.
While still sticking with LED's you might make a group of maybe 4 LEDs that are in the green spectrum and target fiber optics on only the corals that like green light. Or if you're really crafty, you can send the natural light trough a prism that breaks the spectrum up and sends it toward the fiber.... ok maybe not that one.
Plus, I wanted to also use this to light my house during the day and night. I need to incorporate a balance of both for that to work.
Looking up at it. Fibers at the bottom in the white blur -- render times and lighting mistakes don't mix
Sun Tracking?
PS... I just put it to scale and to do 14 cables I need a Fresnel lens that is 80" wide or so... about the size of a small kitchen... lol