Yea, talk about a mesh top. One of my clowns jumped today. I had 2 this morning and by the time it was 2pm I only had one. He was stuck to the side of my tank stand.
Im going to build a mesh top I just need to find a way to make a bunch of angles because it would need to fit around my skimmer and wires.
Ive read anything polypropaline is good for reef tanks.