The AQUA 20 Classic is a small, glass aquarium equipped with a protective hood to prevent the fish from jumping out and a high-performance filtration system Ciano to keep the water crystal clear for as long as possible and with the least possible effort. 1 Inner Filter CF40; 1 Dose WATER CLEAR 'S'; 1 FOAM 'S'; 1 Installation Guide. Dimensions L40xW20xH24,8 cm. Useful Volume 17L, Glass thickness 3mm, Weight 3,05kg.