The Juwel BioPlus Coarse Filter Sponges serve as mechanical and biological filtration for your aquarium, making it an essential component of the Juwel aquarium filter system. The coarse pore structure gives a large surface area, guaranteeing relatively high and even water flow velocity. This means that it is particularly suited to biological filtering in the aerobic area. The open pores of the Juwel filter sponge are made without the use of chemicals, meaning that there is no residue. Juwel BioPlus Coarse - Filter Sponge Available Sizes: 88050 Juwel BioPlus Coarse M - 9.5 x 9.5 x 4.5cm 88100 Juwel BioPlus Coarse L - 12.5 x 12.5 x 5cm 88150 Juwel BioPlus Coarse XL - 15 x 15 x 5cm Best mechanical and biological filtering characteristics Homogenous structure, guaranteeing even flow conditions No chemical residue Suitable for use in freshwater and saltwater aquariums
