Frag shelves on glass

[Rmckoy]

I’m looking for something to attach to the back glass to sit either frags on or to attach to the glass ..
but knowing similar to frag racks attached to the glass they done necessarily get proper flow or light .
I’ve seen different structures and fixtures mounted on the glass .
Any suggestions ?

 

[Saltyreef]

Magnetic Frag racks will recieve the best light and flow imo

 

[Rmckoy]

I have seen different ideas of rock like objects attached to the glass .