Oase’s BioStyle Hang-On-Back Disposable Filter Cartridge. Each cartridge houses 5 different types of filtration media. 45 ppi Filter foam: Traps debris and waste, 3 types of chemical media: Carbon, zeolite and phosphate binders remove odors, impurities and harmful nutrients from the water, Filter fleece: Traps extremely fine debris for a water polishing effect.

• Each cartridge houses 5 different types of filtration media
• 45 ppi Filter foam: Traps debris and waste
• 3 types of chemical media: Carbon, zeolite and phosphate binders remove odors, impurities and harmful nutrients from the water
• Filter fleece: Traps extremely fine debris for a water polishing effect.