MH for 4 to 6 hours only?

Hi all,

Just finished reading Marine Reef Aquarium Handbook by Dr. Robert J.
Goldstein, in which he mentioned on the lighting section that MH are
only good for the first 4 to 6 hours, and that after that, they generate
heat and that VHO is the way to go.

My tank is about 1 1/2 years old, with a 175 W MH pendant, and I've had
no problems with heat or any other matter, except when I allowed the
first bulb to get old--this caused my bubble coral to shrivel up, and
today continues that way, and a hawaiian feather duster that I lost also.

Can anyone offer their opinion on the matter.

TIA,

Richard








--
"..A census taker once tried to test me. I ate his liver with some fava
beans and a nice chianti..."

Hannibal "The Cannibal"

Silence Of The Lambs 1991