Coralife Filter Bio Balls Fish Salt Minerals, 5 Gallons

• 1-inch balls provide a large surface area for beneficial bacteria to grow.
• Balls are typically used in sump filtration systems.
• A good choice for adding biological filtration to your aquatic system.
• Promotes the growth of beneficial nitrifying bacteria within the aquarium filter or refugium.
• Beneficial bacteria helps convert toxic ammonia and waste proteins into nitrates that are easy to remove from the aquatic ecosystem.

Typically used in sump filtration systems, Bio-Balls are a good choice for adding biological filtration to your aquatic system.