One of my Granddaughters has an open top twenty high . I have never had anything but covered aquariums but hers is nice . The water level is down about two inches and you can hear the outside power filter gurgling and splashing and the sound is tranquil and soothing . All she has is guppies and Ramshorn snails so she’s never had a jumper . She is good about her water changes so evaporation has never been a problem for her . It’s fun to watch the fish from above . I would like to try it but I’m old and set in my ways and if I did remove one of my covers I’d probably set it somewhere and accidentally break it . That’s the kind of luck I have .
