Quote:
Originally Posted by Hoppy
CRI remains a bit mysterious to me. Recently I read that incandescent light gives a CRI of 100 - perfect. That was because the color rendering index is designed so that perfect color rendering is that of incandescent light. I doubt that anyone reading this wants an aquarium to look like it has incandescent bulbs lighting it.
My first tank, back in the 1950's had an incandescent light, which I quickly replaced with a DIY T12 fluorescent light. I was amazed by how much better it looked with the fluorescent light, even though T12 bulbs, all that were available then, were notorious for making people look like ghouls.
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CRI is a complicate subject but worthy of aesthetic consideration. I feel the target light quality should bare a close semblance to
*noon equator sunlight. Most people would probably agree since most people choose a light source of 6500k.
With all the phosphors available for use, I wonder why lighting techs don't design a flourescent light source that has a better semblance to noon sunlight at the equator ? Thereby creating a light source with good PAR/PUR and good CRI. Perhaps it's just too costly for a small market.
Bulbs that have good CRI >90 are:
Giesmann 6000k Midday
Eiko's 5500K ColorMaster Digital bulb
Alzo's 5600K video bulb
*It seem to be around 5800K.