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

Package Size: Approx. 17 * 12 * 3cm 

Package List:

100 * Bio Balls

Note:

Transition: 1cm=10mm=0.39inch

Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.

Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!