Oase BioMaster Filter Foam - (20ppi Blue / 30ppi Orange) Parts:POS 2 - Foam 30ppi Orange - 45270 Highest surface area of any

Highest surface area of any filtration medium in the world

Algae Gone will also help to lower algae- causing phosphate

When to use: daily for one week in newly set up aquariums

your aquarium is ready for a few fish

Intensive water clarification through bio-filtering: microorganisms settle on the filter material and break down pollutants

Oase BioMaster Filter Foam - (20ppi Blue / 30ppi Orange) Parts:POS 2 - Foam 30ppi Orange - 45270 Highest surface area of anyReplacement sponge for Biomaster filter Suitable for Biomaster 250, 350, 600, 850 30ppi has finer pores as compare to 20ppi Customize your choice of filter foams to meet the needs of your aquarium Timing to replace the filter foam varies upon aquarium size and the number of fish and plants