So I've been dry for a couple years now and really want to get an aquarium going again. One problem we had with the last one was that our cat would want to jump on to the cover glass and sit there. We were always scared it would break, and so kept that tank (a 10G) in a room we could close off when we weren't there to keep an eye on things. But we never got to enjoy the aquarium very much because of that.

Not using a cover glass isnt an option: in the winter especially I will loose 20% of my water inside of a week to evaporation! And no, getting rid of the cat is no an option. I'd like to do the proverbial ADA 60P with their cover-glass/metal clips but I feel sure that if the cover glass doesn't break from him stepping on it, the metal clips will stress/crack the top edges of the aquarium itself with equally disastrous results.

Any thoughts?