Complete 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 filtration
Approximately 500 sq. ft. of surface area per 1 cu. ft.