DIY lighting for Fluval Edge

Dec 14, 2011
As some of you already know, I recently purchased a used SW Fluval Edge. I want to add corals to it sometime soon, but it seems that the only option that Fluval owners have is to add another lighting fixture. I've read about people doing it, and then adding a piece of plexiglass to the arm in order to protect the lighting. I'm wondering if anyone has ever done this with their Fluval, or if anyone has any better suggestions.