ANAND Bluepet Bio-Logical Superior Filter Wool 6 in 1 Filter Sponge Aquarium Filter  (Biological Filtration for Salt Water and Fresh Water)

Bluepet bio sponge filter is perfect for marine , fresh water and planted tanks , which you are able to cut into the size you want & which suits for your filter The experts according to experiment concluded that its molecule hole and softness is the best suitable to develop beneficial bacteria This bio sponge is able to dissolve the water waste and also improve water quality which is best for fish health . Monthly once washing of bio sponge filter under running tap water is perfectly ok , after washing and cleaning its shape will be remain same ,the wholes will not be blocked by dity particles , and it can be used continiously