The Sea View gel mounting system for aquarium backgrounds allows you to apply any background flawlessly for breathtaking effects! Sea View forms a seal between the background image and the aquarium eliminating all the refraction of light and distortion that occurs with glass and water. The result is a flawless, seemingly illuminated view of the background from every angle of the aquarium. Easy application, easy removal, and it works on glass or acrylic! The non-toxic formula is safe and unaffected by salt creep.