The BioPlus foam in a Juwel aquarium filter system provides essential biological filtration. With its open pore structure it has a large surface area for good aerobic filter bacteria to colonise.
Juwel BioPlus XL Compatibility
These foam are not Juwel originals, however are manufactured using high grade aquatic foam and cut to same size as Juwel originals.
Fine blue sponge/foam filter
15cm x 15cm x 5cm (150mm x 150mm x 50mm)