Filtration is the heart of an aquarium. Fish needs to be crystal clear water to stay in an aquarium healthy. Filtration can be biological, mechanical and chemical. Completely Submersible and be fit for fresh water and sea water. Super quite, efficient energy economizing, easy to clean.

The filter sponge absorbs dirt & clears the water. Fully submersible and ideal for any aquarium filtration. Aquarium Filter BL-400F-4W-400L/H , Frequency: 50/60Hz. Pure Copper Motor. Single Cartridge. More Silent and Powerful. Better Aeration. Full Adjust Ability. Crystal Clear Water. 

Blue Pet Aquarium Internal Liquid Filter BL-400F-4W-400L/H Suitable for 10-40 Litre Aquarium Fish Tank