So you've given up on store-bought 2D backgrounds filled with “photo-realistic” plants and rocks, and are considering alternative methods of having a colored background. Don't whip out that can of Krylon just yet if you ever plan to sell the aquarium, or want to change colors.
PlastiDip – a rubber coating aerosol – is arguably a better alternative to conventional roll-on latex paint, can generally be removed in a single sheet. As with most paints, you may need multiple coats for even coverage, and will most likely run into the problem of it getting stuck under the trim during removal.
The application process also requires a bit of prep time, including the use of masking or painters tape, using newspaper to guard from over-spray, and should be performed outdoors or in a room with appropriate ventilation where there is no chance to accidentally add a splash of color to your favorite chair or that new couch.
Enter vinyl – the reusable, repositionable wrapper for your watery showcase. Vinyl costs about the same per square foot as conventional aerosols, but the application and removal process is considerably quicker, and easier. Best of all, you don't need to worry about overspray or fumes, so it can be applied indoors.
No matter what color you are looking for, chances are, there is a roll of vinyl to suit your needs. Want a carbon fiber look, or a wider sheet? No problem! Vinyl rolls come in various sizes, several of which will match up perfectly with most standard aquarium dimensions. There are also larger sheets available which are great for custom sizes and for wrapping multiple aquariums. Another viable option is black-out tint.
Special thanks to Jay Schreiner, and Fish Gallery for their tips.