I wanted to elevate my LED mount on top of my aquarium to make rook for more plants above the water, so I've made a modular system that lets you do just that.

The clamp uses 2 M3 screws and nuts to clamp onto the glass using a small wedge to prevent it from breaking the glass.
You need 2x wedges per clamp.

All modules are attached with M3 screws and nuts.

This fits up to 6mm glass.

I included the step if you want to make your own modules.

(My LED bar has a foot-spacing of 85mm, so the mount is made 88mm wide to fit it, you can remix it if you need to, or contact me if you need a custom led-mount.