Tre' Landrum wrote:
Another problem with plumbing in direct sunlight is that the wavelengths the
corals we like are not the suns full wavelength. Most corals are from a fair
distance under the water. It only takes a few feet of water to start
filtering out the reds, and the deeper you go the more you only have blue
left. That is why when we are trying to grow corals from 40 foot of water we
want 10K & 20K light... aka blue light. If you just pump full spectrum sun
light you will have a light that is about 2400K.... aka perfect for growing
plants.. not as good for growing coral. Sorry to burst that bubble.

Tre' Landrum



This is not true at all. First most of the corals that are collected in
our hobby come from less than 20 feet of depth. Second, sunlight is not
2400K it is aprox 6000K color temp. Natural sunlight is one of the
best ways to grow corals. If you look at just about any successful
coral farm they use natural sunlight for the majority of thier light
needs. Plus most corals will grow well even in light as with a color
temp as low as 5000K or even 4500K, now the color might not look the
same as it would in a tank with 20,000K bulbs on it, but it will grow a
lot faster.

Kim