Seachem | Aquarium PolisherAquarium Polisher Seachem Aquarium Polisher is the ideal solution for maintaining the exterior of glass and acrylic aquariums, as well as other surfaces. Free of ammonia, it's safe for use around aquariums and terrariums. This easy to use polisher effectively removes mineral deposits, water spots, and fingerprints while protecting surfaces from dust, salt, and residue. Keep your display spotless and shielded for lasting brilliance.