Brian,
Looks like you did a nice job. I have had a similar thing with the fish. Easy for them to jump out but getting back in is a problem. The cost of the fish could easily cover the screen cost. I am getting ready to order some for the 180 and 30 gal. I intend to go with 1/4" unless there is a better reason to use 1/8"?
Thanks for sharing,
Gary