HOW TO: CHEAP and EASY aquarium backgrounds! - YouTube
Opinions on background (pics) | The Planted Tank Forum
Amazon.com : Current USA Serene Add-on Accessory LED Background Light Kit | Includes Frosted Background Glass Film and RGB LED Light Strip | Fits Aquariums 48"-60" (Requires Serene Controller) : Pet Supplies
Background Help | Barr Report Forum - Aquarium Plants
Giving Frosted Glass Background a Try : r/Aquariums