High-temperature sterilized natural oyster shells | Aquarium filter media for water purification, mineral supplementation, essential for fish and turtle keeping

This product is made from premium-quality oyster shells sourced from coastal areas. Through multiple cleaning processes, high-temperature steam sterilization, and natural air-drying, we ensure that the shells are free from impurities and safe for aquarium use. Oyster shells are naturally rich in calcium carbonate and a variety of beneficial trace elements. They continuously and slowly release calcium into the water, effectively stabilizing and raising the pH level. This makes them especially suitable for alkaline-water ornamental fish and marine tanks, preventing fish discomfort caused by acidification from the root.

The unique natural porous structure offers a much larger specific surface area than conventional filter media, making it an ideal "breeding ground" for nitrifying bacteria. It quickly establishes a powerful biological filtration system that efficiently breaks down highly toxic ammonia nitrogen and nitrite, keeping your aquarium crystal clear for a long time. In addition, the irregular, naturally shaped shells can serve as decorative landscaping stones while also providing hiding spaces for bottom-dwelling fish.

Durable, economical, resistant to pulverization, and reusable. Choosing oyster shell filter media means creating a healthy and stable underwater home for your beloved fish.

Specifications：

Shells（1000g);Packaging Weight (1000g);

Shells（5000g);Packaging Weight (5000g);

Shells（10000g);Packaging Weight (10000g)