Aquarium Filters Bio-Logical

Features: New bio balls with larger bacterium cultivation area. 15 * 16mm size, 100pcs bio balls included. Increase dissolved oxygen levels and improve biological filtration. Great for aquarium, fish tanks, koi ponds, waste water systems, etc. Specifications: Color: Blue Material: PVC Quantity: 100pcs Size: 15 * 16mm / 0.59 * 0.63in Weight: 1g(1pc) Package Size: Approx. 17 * 12 * 3cm? Package Weight: 114g? Package List: 100 * Bio Balls

Great for fish tanks, to promote gas exchange and increase dissolved oxygen levels. Great for tropical fish farms, koi ponds, waste water systems, etc. For use with wet/dry filters (here is not included), to improve biological filtration. Aiding in the critical gas-exchange process that is needed for successful biological filtration. Features: Great for fish tanks, to promote gas exchange and increase dissolved oxygen levels. Great for tropical fish farms, koi ponds, waste water systems, etc. For use with wet/dry filters (here is not included), to improve biological filtration. Aiding in the critical gas-exchange process that is needed for successful biological filtration. Specifications: