I'm looking to purchase a black background for my aquarium. I can't seem to find just the plain "black" one.. Everyone seems to have the double sided reef/plant ones. I could get away with about 30L x 22H. If anyone knows where I could purchase something of this length, please give me a URL.

Thanks a bunch!!!

I like what I bought at Petco. It's a very dark blue fading up to a lighter blue plastic sheeting that can be taped to the back of the tank. The other side has pics of plants. (not what I like)