ZELBRITE High Perfomance Pool Filter Media - 15 Kg / bag Keeps your pool sparkling clear; manufactured in NSW, Australia. Zelbrite porous structure provides a huge surface area capable of filtering particles down to 1 micron. Use Zelbrite for the finest filtration, removes ammonia from your pool, reduces odour, enhances chlorine perfomance, no more burning eyes and extends plate life of salt water chlorinators. Reducing backwashing and saving water, reducing pump pressure and saving on electricity consumption, absorbs ammonia and reducing chlorine demand