I wouldn't know which fish of yours would jump (someone else said danios) but,
assuming that it's a possibility, you will want something to cover the tank.
However, the more that's covering it, the more light will be blocked,
obviously. Is it possible to take the acrylic covers off the fixture, and
leave the glass top on the tank? Don't do it if it will be unsafe, of course,
but I would think that one cover is better, and would be inclined to leave the
glass one there. It will be easier to keep glass clean than acrylic, I think.

In article , "SlimFlem"
wrote:
There is a protective acrylic shield that covers the entire fixture on the
water side.

"Andrew Roberts" wrote in message
. ..
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
more and not be blocked by the tops. Does anyone else do this? Also,
here are the fish I have. Are any of these in danger of jumping to
their death with no tops?


__
"Insert witty comment here."
-John