Aquarium equipment -Polyester aquarium filter bag Highlights generic brand Polyester aquarium filter bag Description: Made from harmless polyester fiber and does not affect the water quality PH value, TDS, KH, GH. Good permeability removes excess food, detritus, organic waste and other particles to reduce levels of ammonia and other unwanted substances Easy to rinse, can be machine or hand washed. Ideal for wet/dry filter systems, pumps and dry filters. Specification: Material: Polyester Fiber Color: White Filter Bag Size: Approx. 20x35cm / 7.87x13.80 inch Package includes: 3pcs Aquarium Filter Bag Note: Since the above size is measured by hand, the size of the actual item might be slightly different from the above picture . Due to lighting effects, monitor settings etc. There could be a slight difference in the color tone of the pictures and the actual item.