Features:
New bio balls with larger bacterium cultivation area.
15 * 16mm size, 100pcs bio balls included.
Increase dissolved oxygen levels and improve biological filtration.
for aquarium, fish tanks, koi , 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: H22573
100 * Bio Balls