OAS Biorock


Thanks to its coarse texture, bio rock is a good biological filter material. The material has sufficient adhesion substrate for bacteria while allowing for a high pumping capacity increase. Content: 1 liter.

OAS ceramic rings


OAS Ceramic rings are a high performance filter material that effectively removes residual medicines, chlorine, certain odours and also contaminants which are produced by the metabolism of organic substances. Content: 1 liter