Ceramic ring (1 kg per pack)

- Extremely porous ceramic media for efficient biological filtration.

- Their surface area and pores are aptly sized to accommodate bacteria necessary for biological balance and to remove toxic ammonia and nitrite.

- Hollow design effectively distributes water flow and allows massive colonies of beneficial bacteria to grow on and inside each ring, creating an ideal “bio chemical filter”.

- They will not break down in the filter or alter pH or water hardness.

- Great for both fresh and saltwater aquariums

- In the event of excessive buildup, you may gently rinse with water from an established aquarium, if desired