Aquarium filter media set for SunSun HW-404A consisting of ceramic rings, bio balls, filter fleece, and filter mat.

Ceramic Rings
Mechanically acting filter media are primarily used to remove suspended particles. Ceramic rings create turbulence in the filter basket due to their special shape and large surface area, allowing suspended particles to settle during sinking, while coarse dirt particles are removed from the water cycle. Additionally, they provide optimal conditions for the colonization of filter bacteria, thereby reducing nitrite spikes more effectively than conventional filter materials.

Bio Balls
Bio balls are a filter medium suitable for any external filter. They are reusable and easy to clean, suitable for both freshwater and saltwater. In aquaristics, bio balls are used as both a mechanical and biological filter medium. They offer a large surface area for bacteria colonization and are considered high-performance filling material, especially in large filtration systems. Unlike many other filter media, bio balls also provide a practically unlimited lifespan, making them a popular and cost-effective medium in pond filter systems, trickle filters, and chamber filters.

Filter Fleece
Filter media such as fleece, cotton, or sponges are an important component of modern aquaristics. Filter fleece can capture coarse dirt particles, sponges reduce nitrate, purify the water from chemical contaminants, and provide optimal conditions for the colonization of filter bacteria.

Filter Mat
Filter mats utilize structured materials made from porous, phenol-free special foam. Surrounded by water, they mechanically retain coarse and fine particle residues. After a maturation period, bacteria settle in the fabric, which further intensifies biological pollutant degradation. Washable and reusable.