Thanks mate.Hey mate , I think your tank is amazing.
As an alternative to the mesh screen, how about a "euro brace" say 70 mm wide made of Perspex. I always believed that the jumpers launch themselves from the corners of the tank and out. This frame can be made to just sit ontop of your glass.
I did think of doing a euro brace style lining around the tank. It would certainly look good if done properly. I would have the outside edge of the perspex rebated so that it sat nicely on the edge of the glass tank. The only reason i didn't go with a euro brace was that i was worried fish would still jump from the centre of the tank and end up on top of the euro brace and either dry up and die there or keep flapping around until it fell off the brace and onto the floor.
But it is definitely an option that i may look more into in the future!