Heat and the lack of evaporation is the major point with reefs
and glass covers....... not the light getting thorough....

Mandarin333 wrote:

Subject: best 'cover' for aquarium
From: (Pasquale)
Date: 6/30/04 11:47 AM Eastern Daylight Time
Message-id:

Hi folks,
We're just setting up our new salt water aquarium. I've been reading
that it's better not to use a glass cover (which came with our tank),
however, I'm afraid that I might have issues with jumping fish,
'fishing cats' and cat hair in general inside the aquarium. I've been
reading about using eggcrate as a cover, but I'm not convinced that it
will be effective against cat hair. My girlfriend is also not
terribly convinced that eggcrate (black or even silver) will look nice
on top of the aquarium.



Reef types believe that the glass cuts down on the intensity of their light.
If you are running a fish only tank then just use the glass.

-M333



--
Ric Seyler