Waterproof/weatherproof upholstery fabric also looks good as a background and comes in many colors.
I've recently used a sheet of aluminum flashing as a background, spray painted with a dark blue color. It doesn't crease and stays straight unlike the pain in the @ss paper backgrounds (for those who already have their tanks set up, if I had the chance before everything was in place I would've just painted the back).
I've recently used a sheet of aluminum flashing as a background, spray painted with a dark blue color. It doesn't crease and stays straight unlike the pain in the @ss paper backgrounds (for those who already have their tanks set up, if I had the chance before everything was in place I would've just painted the back).