Bio Ceramic Rings – 14oz/400g Aquarium Filter Media

Here’s the condensed English product description:

**CERAMIC BIO MEDIA FILTER RINGS**

Nearly a pound (14 oz ~ 400g) of highly porous ceramic rings for efficient biological filtration in aquarium/pond filters. These rings maximize surface area for beneficial bacteria to break down toxic ammonia and nitrite. Their hollow design promotes optimal water flow. They are safe for fish and will not alter water parameters. Includes a reusable zipper media bag for easy handling.

Dimensions:
* Ceramic ring: 1/2″ x 1/2″
* Media bag: approx. 8″ x 5.5″

Includes: 400g / 14 ounces of filter media and one media bag.