Have a Fluval Edge 23G (dosing ferts and easycarbo, no co2 - lighting is the mr16 LED upgrade) and looking to cover the back wall, or at least conceal it.
Would a flame moss wall work? Seen here:
http://aquaristik.bplaced.com/fluvaledg ... G_5631.jpg
http://aquaristik.bplaced.com/fluvaledg ...