What materials are aquarium backgrounds made from?
Common choices that mount to the outside of the glass are vinyl or PVC films, static-cling sheets, adhesive-backed films, and waterproof poster prints. For more texture, there are foam or molded resin 3D panels that can be placed in aquariums or backlit panels can be used with lighting for effects. If you want an option that cuts glare and handles humidity, look for moisture-resistant matte finishes.
How do I maintain and clean aquarium backgrounds?
For films and posters that are on the outside of the tank, wipe the outside glass with a microfiber cloth dampened with water or diluted vinegar. But avoid letting liquids drip into the tank. For interior 3D or foam panels, gently scrub algae off with a soft brush during water changes and rinse with dechlorinated water if you take them out of the tank. Don't use soaps or bleach. Look regularly for trapped debris or loose edges and squeegee bubbles so the background stays tight and tidy.