You had the answer all the time, is within your post.
Cover it better and minimize exposed area. If you are using metal halide
lighting, you are lucky with only a gallon...
iy
"KurtG" wrote in message
...

I have a 110 gallon tank that seems to evaporate almost a gallon a day. Is
that odd?

I run my lights about 8 hours a day, live at sea level and in florida
which is not exactly dry air.

Just curious. I keep looking for a leak, but there is none. I suppose
I'll look into covering it better.

--Kurt