MH lights - what rating?

[Bob I]

Originally Posted by McNasty

I do not know if this is true becuase i run 14k MH, but I have heard that corals will grow faster under 10k lights but not have the color of 20k lights.

Under 20 K lights color is the best but growth is slow.

I personaly went for looks in my tank when i set it up, coral growth is not to bad.

Maybe other people who have run different bulbs can give there input on color and growth.

It is true, there is greater PAR under whiter light. The more blue, the less PAR, and less coral growth.