Half Off Ponds K1 Bio Filter Media — 2 cu ft Moving Bed Media for Ponds & Aquariums (10.5 mm x 8 mm)

High-performance K1 moving bed bio-media engineered for superior biological filtration. Each pellet rotates freely in the water column to maximize oxygen exposure and contact with organic waste, creating abundant habitat for beneficial bacteria while helping keep pond and aquarium water clear. Key specifications: 950 m²/m³ total surface area and 500 m²/m³ protected surface area, providing sheltered zones inside the media where nitrifying bacteria and other organisms can establish safely. The 10.5 mm x 8 mm K1 pieces are designed to stay in motion, which prevents clogging and channeling common with static pads and makes them effectively self-cleaning. This low-maintenance media is suitable for koi pond filters, aquaponic systems, fluidized bed setups, and aquarium biofilters — it promotes a stable, oxygen-rich biofilm that helps lower ammonia and nitrite levels for healthier fish and plants. Supplied in bulk (2 cu ft), the media integrates easily into DIY and commercial filtration systems and can be scaled to suit different tank and pond sizes.