AOQIVIS Aquarium Bio Balls Filter Media, 500 Black 1.02-Inch Balls with Mesh Bags

AOQIVIS bio balls are biological filter media for aquarium and pond filters, supplied as 500 black balls measuring 1.02 inches (2.59 cm) in diameter.

• Five included mesh bags — keep the media together and make it easier to position inside a filter.
• Internal ball structure — provides additional attachment points for biological filtration.
• Corrosion-resistant material — made for use around fish, shrimp, plants, and other aquatic life.
• Broad filter compatibility — fits most standard aquarium and pond filter types.
• Porous design — allows straightforward cleaning and maintenance.
• Shape-retaining construction — resists crushing and deformation during long-term use.

Filter media needs to suit the system it will be used in and stay contained as water moves through the filter. AOQIVIS bio balls are intended for biological filtration in aquariums, fish tanks, ponds, water gardens, and other aquatic systems. The included mesh bags help prevent the balls from scattering while allowing water to flow through the media.

What kinds of filters can these bio balls be used in?

They are compatible with most standard filter types, including canister filters, hang-on-back filters, and pond filter systems. Use them in an aquarium or fish tank, or in a pond or water garden filtration setup. Their purpose is biological filtration, with an internal structure that offers more attachment points.

• For aquariums and fish tanks
• For ponds and water gardens
• For other aquatic systems with compatible filters

How do you place the bio balls in a filter?

Put the balls into one of the included mesh bags, then position the bag in your filter. This simple placement keeps the media together, helps prevent loose balls from scattering, and allows water to pass through smoothly.

• No complicated setup is required.
• The bags support organized placement inside the filter.
• Choose a position that fits your filter system.

What are the bio balls made to withstand?

The corrosion-resistant material is suitable for aquatic systems containing fish, shrimp, plants, and other aquatic organisms. The balls are constructed to resist crushing or deformation, helping them retain their shape and filtration performance over long-term use.

• Black bio balls with an internal structure
• Designed for use around aquatic organisms
• Shape-retaining construction for continued use

How does the porous design affect maintenance?

The porous design makes the media easier to clean and maintain. Its structure is intended to reduce how often filter media needs replacement, helping limit routine maintenance effort while keeping the balls usable in the filter.

• Porous design supports easy cleaning.
• Designed to reduce replacement frequency.
• Mesh bags keep the media contained during handling.

These bio balls suit aquarium and pond keepers who need biological filter media for a compatible system and want the media held in bags for easier placement. They are designed for biological filtration in aquatic systems, with a porous structure and corrosion-resistant construction.

Read our guide: Aquascaping a freshwater tank: substrate, stone, wood and light