Hagen 6-Pack AquaClear Biomax F/A620 Aquarium Water Filter Media for AquaClear 110 and 500 Power Filter
Fits AquaClear 110 and "500"Increases biological filtration efficiency by 30%Expands biological capacity of aquariums Provides optimal living conditions for beneficial bacteria Enhances ammonia and nitrite reduction Safe for fresh and saltwater use2 x 150 g inserts.