This is the starter filter media that we recommend if using SUNSUN Frequency Outside Filter HW-302 and HW-303B. This can be used as any filter media however amounts have been calculated for these specific filters.
60 X 32mm Bio Balls
900g box of white ceramic bio rings 1.5cm
Filter foam 3cm x 25cm x 25cm - 15ppi
NZ$ 39.90 including GST
Or make 6 weekly interest free payments from $6.65