Bio Balls Filter Media
Bio-balls are small plastic balls ideal for wet/dry filters, and well suited to high pressure flow. They are covered with tiny pegs for immense surface area, unmatched by other biological media. Bio-balls are more economical in large quantities than ceramic rings, and will perform well in any situation as long as you clean them regularly (simply rinse in clean salt water - don't scrub). As with all biological filter media, don't clean them all at once - throw them in a couple of filter bags and clean them in batches, and don't forget to monitor your ammonia levels.