Resin decoration Greek Column 2 by Aqua Della , measuring 15.8 x 5.5 x 14.1 cm . This Greek column is a natural looking decoration from Aqua Della which is made of polyester resin. This material is perfectly healthy and has no impact on the biological balance of your aquarium. The decoration is suitable for both freshwater and saltwater aquariums. Instruction: Carefully unpack the decoration and rinse it with hot water. Caution: Do not use soap, all-purpose cleaner or other cleaning products (eg: hydrogen peroxide, thinner, turpentine).