JUWEL BIOPLUS COARSE L Gold Fish Matrix is sufficiently large that

Matrix is sufficiently large that no filter bag should be required for most applications

With its impressive cleaning abilities

Easy filtration

Do not use for food-producing animals

JUWEL BIOPLUS COARSE L Gold Fish Matrix is sufficiently large thatThe JUWEL filter sponge coarse serves for the mechanical and biological filtering of your aquarium, making it an essential component of the JUWEL 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 were made without the use of chemicals, meaning that