BrightWater Aquarium Filter Media, Ceramic Filter Ring, Ceramic Ring Fish Filter for Aquarium, Bio Media, Bio Media Ceramic Ring, B-Series (500g/17.6oz) - Product Features
- Forged at high temperatures to reduce flaking and erosion
- Encourages growth of biological colonies and holds large amounts of good bacteria
- Ideal for both freshwater and saltwater, fits most filters, and tanks
- Reduces ammonia and nitrate levels
- W 0.39? x H 0.39? / W 1 CM x H 1 CM