XY-2011 Square Bio Sponge Filter

* New item with high quality
* This product is a multi-filtration system, using maifanite as filter material Can move water impurities in physical filtration system
* Can break down the waste food and droppings in biological filtration system Can absorb harmful substance and dissolve minerals
* to make water quality balance Supplying the water with much needed oxygen Reduces noise from air pump and consumes lowest wattage
* This filter uses bubbles of air from an external air pump,or an integral water pump to draw water through filter.