Amazon
High surface area to encourage the growth of nitrifying bacteria. Item comes packaged in a sealed polythene bag. Helps to reduce toxic nitrite and nitrate levels within your pond or aquarium Ideal for internal, cascade filters. It stabilizes pH, fixes phenols and heavy metals
High surface area to encourage the growth of nitrifying bacteria. Item comes packaged in a sealed polythene bag. Helps to reduce toxic nitrite and nitrate levels within your pond or aquarium Ideal for internal, cascade filters. It stabilizes pH, fixes phenols and heavy metals