Characteristics: Internal biological filter for “Italian-style” aquariums with 3 compartments including filter materials and recirculation pump of 230 lt/h Large filter with basic dimensions 18.0 x 7.0 cm//height 26 cm easy to install thanks to the suction cups Filter media included: white fiber for pre-filtration-activated carbon-black sponge for mechanical filtration-sintered glass stones and ultra-porous ceramic cylinders for bacteria settlement Including AMTRA STREAM 230 recirculation pump: adjustable flow rate - maximum flow 230 lt/h Easy to clean and extremely efficient, useful in both fresh and marine water for aquariums up to 50 liters of capacity.Article prepared for 220-240 Volt electrical connection and 50 Hz frequency with plug EU