Acrylic is known for its excellent light transmittance, clarity and lack of colour. Scratches can occur whenever you mishandle an acrylic tank or don't clean it with the correct tools. Polishing acrylic takes some time, but if you have patience there is a big payoff. Dymax IQ Polishing Paste is used to remove dull oxidized film and other light imperfections on the acrylic surface.