Apply in fish farming, waste water treatment and MBBR. Material: PE or HDPE. High ... regulation: denitrification, dephosphorization, decarbonization, water purification.(4). Aquiculture (pond, fish farming and aquarium): denitrification, decarbonization, improve the living environment of fish ... -spanyear≥10≥10PH5-115-11 Biocell filter media for fish farming