GANAZONO 20pcs Mixed Color Bio Balls Fish Tank Filter Media Aquarium Biological Filtration Balls for Clarification and Oxygen Boosting and Safe Filtration Material for Healthy Aquatic

About this item

• Filter balls--there is a hollow in the middle of the biological column filtering medium, can provide an anaerobic environment, reducing the content of nitrates in , and promote more healthy quality,filter media
• Cleaning balls aquarium--made of material, durable and safe to use,filter media
• Aquarium bio balls--they will also promote gas exchange and increase dissolved oxygen levels,filter media
• Fish tank balls,,the bio,balls have a structure of dense holes where live of ,filter media
• Filter media--clarify your naturally and cultivate beneficial substance with these bio-balls,fish tank balls