Also, after removing my glass tops, I noticed my tank temperature does not
go above 80. It now stays at the preset 78. I would imagine the glass tops
were radiating the contianed heat to the water and heating it up. The heat
from the light now has a better means to be dispipated. This is a good
thing.

"SlimFlem" wrote in message
newsJ0R9.535951$P31.177156@rwcrnsc53...
Chuck, you are correct about the glass heating up. When I took mine off
today, the glass under the lights was very hot. I'm glad they didn't
crack
and fall into the tank, potentially. The light spread is much better
without them.

What I did do is take the slimmer pieces of the glass tops out of the
plastic connector and place them on the tank in front of the light. They
at
least give a little protection in case someone tries to jump. =)

Thanks.

"Chuck Gadd" wrote in message
...
On 2 Jan 2003 08:23:54 -0800, (SlimFlem) wrote:

Hi.

I was recommended by the LFS to remove my glass tops now that I am
using a Coralife 4 x 65 on my 75G. They said the light will spread

Well, I've heard several people talk about glass cracking when used
with lots of compact fluorescent light. It isn't that the CF put out
more heat than regular fluorescent tubes, but the tube is much more
compact, so the heat is more concentrated.

On my 75g, I've got an canopy that suspends the lights 5 or 6 inches
over the top of the tank. I don't use any type of glass it. On my
other tanks, the glass does need frequent cleaning, and I can
definitely see a decrease in light levels due to the glass, even 1 day
after cleaning it...



Chuck Gadd
http://www.csd.net/~cgadd/aqua