Anjon 1.5" BioBalls - Bulk 1600 Pieces Bio BallsBio balls are small, pegged plastic balls mainly used as the biological media in ponds. These little plastic bio balls have TONS of surface area for the growth of bacteria for filtration. There are approximately 80 BioBalls per gallon. They are really simple to use: place into a mesh bag and drop into the pond filter.
Atlantic Water Gardens 1.5" Bio-Balls - 150pcsAtlantic Water Gardens Bio-Balls are extremely durable, lightweight plastic filter media that are easy to clean and reduce channeling. These pegged plastic balls are 1.5" diameter balls have nearly 25 square inches of surface area for bacteria colonization.
Atlantic Water Gardens FilterFalls Accessories - Media BagAtlantic Water Gardens Media Bags are made with triple-stitched, heavy-duty netting and have a convenient drawstring to secure the media within your FilterFalls. Whether using lightweight media blocks, Bio-Balls or heavy lava rocks, Atlantic’s Media Bags are meant to last.