Feature:1.Sponge filters provide excellent both mechanical and biological filtration2.Simple, effective,easy to clean (squeeze in tank water), Working perfect getting your fish tank water super clean and clear.3.Reliable, effective and easy to set up. Connect the tube to the air pump and connect it to the filter. Plug it in. It works.4.Excellent for small size fish like dwarf cichlid, guppy, killifish etc., or for hatcheries, maternity tanks, and fry tanks, as the filter produces minimal current and has almost no way to suck the fish through the filter.5.Sponge filter traps waste particles mechanically cleaning the water without trapping the baby fish.How Does It Work? A sponge filter uses bubbles of air from an external air pump, or an integral water pump to draw water through the sponge. As water is drawn out through the lift tube or pump, it is replaced by water entering the sponge. The surface of all the bubbles or pockets in the sponge provides a bed for the bacteria of a biological filter. The bacteria help to break down harmful waste (ammonia and nitrite).
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