Complete Aquatics Bio-Blox Biological Filter Media Size:1 Cubic Foot (with Mesh Bag) WAH-5/8 Weighted Airline works well

WAH-5/8 Weighted Airline works well with HSS16 (or larger) hose clamps

extreme temperatures or chemical shock

Starts working instantly to provide clear

Diffusers can be filled with gravel or sand to keep weighted to the bottom of the pond

Complete Aquatics Bio-Blox Biological Filter Media Size:1 Cubic Foot (with Mesh Bag) WAH-5/8 Weighted Airline works wellComplete Aquatics Bio Blox Media are an ultra high surface area biological filter media that is ideal for water gardens and Koi ponds. It can be used in virtually any biological filter to provide colonization space for the beneficial bacteria that consume organic waste and harmful ammonia & nitrites. The bacteria are essential for maintaining a healthy and clean environment for fish and water clarity. For ponds & water gardens with biological