CNZ® 50pcs Black Aquarium Fish Tank Filter Bio-Balls Filtration Media, 1-inch (1-Pack)

Used as the biological media in the filters, such as aquarium, fish tank and pond filter media. These plastic bio balls have lots of surface area for filtering the growth of bacteria, can promote gas exchange, increases dissolved oxygen level and removes harmful gases.

• Ready-to-use filter bags, convenient for use with your canister filter, power filter, or fish pond filter.
• They provide large amount of surface area in a small space where lots of bio-filtration can form on the surface. These bio-filtration can help convert and remove toxic waste like ammonia and nitrites in your tank
• These Bio balls also help produce turbulent flow which helps with the gas exchange and reduce toxins.
• Ball size: 1 inch in diameter. Mesh bag size: 8"x 5.5"