Key Features 800ml Box 13% extra surface area then previous Hel X Bio Media for Oase BioMaster Aquarium Filter. Allows increase of culture of beneficial bacterial Gives rapid breakdown of food and fish waste Oase Hel X 13, an advanced biological media designed for BioMaster Aquarium Filters. The Hel X bio media has been redeveloped by Oase engineers to further increase its biological settlement surface area by an additional 13%…giving it is name Hel X 13. Hel X 13 consists of small individual bio mechanical plastic casings which allow benefical aerobic bacteria to settle and breed inside its unique shape. This helps to biologically break down soluble waste to be filtered out while within the Oase BioMaster. Because of its increased surface area, the bio media allows a greater amount of bacteria to be contained within the same sized filter volume. This gives a more rapid breakdown of food and fish waste in the system giving an all round healthier and cleaner water in the pond. The
