The JUWEL fine filter sponge is primarily used for the biological filtering of your aquarium in the anaerobic zone, making it an essential component of the JUWEL filter system.

The fine pore structure gives a very large surface area, guaranteeing slow and even water flow conditions. This means that it is particularly suitable for biological filtering in the anaerobic area.

The open pores of the JUWEL filter sponge were made without the use of chemicals, meaning that there is no residue.

It is recommended to change the bio plus Fine sponge every 3 to 9 months to keep your filter running as efficiently and possible.

Product Features:

Optimum biological filtering characteristics
Homogeneous structure, guaranteeing even flow conditions
No chemical residue
Suitable for use in freshwater and saltwater aquariums.

Technical details:

Dimensions: 7,5 x 5 x 5 cm
Usage: Internal Filter

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