Our bio balls are small black plastic balls with pegs that act as a powerful bio-filter. Each ball is 1.5 inches in diameter and made of a high-density, high-quality polypropylene that ensures the pins will not become brittle and break. Each bio ball provides a multi-pronged area for beneficial bacteria to cling to and thrive, removing damaging ammonia and nitrites that can be harmful to your aquatic species as water passes over them. And because of their unique design, each compact bio ball has an impressive surface area of 22.7328 inches. Our bio balls are sold in quantities of 100 to 300 or by the cubic foot; there are approximately 780 bio balls per cubic foot.
You won't need to clean them often; when you do a water change, you can simply swirl the bio balls in some of the water you will be discarding to get the excess gunk off of them, but they should not be scrubbed or wiped as this will remove the beneficial bacteria. Bio balls rarely need to be replaced and have an indefinite lifespan.