Amtra Biocell Blue Foam Synthetic Aquarium Sponge, Mechanical Filter Non Toxic, Fine Porosity, 18x12 CM

PACKAGE CONTENTS: The package contains a synthetic, non-toxic and release-free aquarium sponge. Size: 50x50/ Fine Porosity 30 PPI ACTION: Thanks to its particular structure, the sponge retains the dirt particles and acts as a support for the settlement of the bacterial flora necessary for the biological filtration of the water REUSABLE: By washing the sponge thoroughly under running water, you can use it several times. If used as a support for the settlement of bacteria in the aquarium, cleaning is recommended only in the aquarium water previously drawn and placed in a bucket, so that the chlorine present in the tap water cannot kill the bacterial flora present BENEFITS: Clean and crystalline water thanks to the removal of the particles that create turbidity ADAPTABLE: Can be easily cut to size to fit all types of internal, external or sump filters