NaturalClear Pond PLUS - 2.5 kg Pail Natural Clear Pond Bacteria is a benificial bacteria that is Canadian-made Bioremediation Product containing four species of bacteria designed to work in the harsh Canadian climate. This is our concentrated multi-species formula to work in most pond, lake and wastewater environments designed by our in-house biologists. This formula contains resilient bacteria that continue to multiply at temperatures as low as 3o Celsius. This product reduces COD, BOD, organic carbon, ammonium, nitrates, nitrites, phosphates and even hydrocarbons. This bacteria product produces natural flocculents to clarify ponds, lakes and wastewater.