Bin liner and oil? You oil the liner and use it to make the liner stick to the glass?
My walls are painted moss green, and its a great background for my tanks. But I may be biased since I like green so much.
I need a background for my tank too.
T.O.S, do you just tape the fleece to the back?
I quite want something slightly unusual but don't want to pay loads of money for a 3D background.