The 2 copperbands in that tank don't bother my coral or clams.
I wanted to make something that looked better than the screen frame and it had to be reusable as the mesh life is a year or so. The traingular acrylic is just held by the tape so taking it off and removing the screen when it's time will be easy. I'll probably need to replace the tape when I replace the mesh. It's day one, we'll see how well it holds up to the light, how the adhesive works over time. Looks a lot better so plus 1 so far.
I ordered the acrylic rod from us plastics, it's not a cheap way to go but it should last a lifetime with mesh replacements.