I have a rimless tank love the look I'm pretty young so it looks really modern rather than having a canopy which looks so old school something my grandpa would have (no offense to you older guys lol) and I also have a screen on top nothing jumps out or escapes. The screen is not noticeable unless you're on top of the tank. I must admit I do like the floating canopy look in case I ever do a retro fit DIY lighting