Hagen Bio-Max Insert for AquaClear 50/200

AquaClear 50 BioMax Filter Insert provides an optimal environment for beneficial bacteria growth. Reducing ammonia and nitrite levels, it increases biological filtration efficiency by 30%. Exclusively designed for the AquaClear 50 Power Filter, the insert is safe for fresh and saltwater aquariums. Net Weight: 4.4 oz (125 g).