Fluval Biomax Organic Rings with a Complex Pore System for Beneficial Bacteria, Suitable Flex 34 L, 57 L and 123 as well Spec 1, 3 5 Aquariums, 42 g

Specially designed for the Fluval Spec aquarium, Biomax serves as a biological filter. The large surface area of BIOMAX promotes the growth of beneficial bacteria to optimally break down fish and plant residues. Country of origin: China Package dimensions (L x W x H): 5.0 x 6.0 x 8.5 cm