Aquarium external filter with electronic microprocessor control aquarium size 240 l 450 l power consumption 10 w 35 w canister volume 12 5 l filter volume 6 l 0 6 l prefilter integrated self priming feature stepped increase or decrease of the water flow electronically controlled flow variation cleaning interval indicator electronic system monitoring type of aquarium freshwater suitable aquarium size 240 450 litres minimum aquarium size 240 litres maxim