Natural Polished Oyster Shell Filter Media for Koi Ponds & Aquariums - Bio-Filter & Water Clarifier

Natural oyster shells provide a stable biological filtration medium, promoting beneficial bacteria growth for a healthy aquatic environment.

Effectively purifies water by absorbing impurities and stabilizing pH levels, ensuring crystal clear water for fish and plants.

Polished and cleaned for purity, these oyster shells are ready to use and come with a convenient mesh bag for easy placement.

Ideal for various aquatic setups including koi ponds, freshwater aquariums, and sumps, enhancing overall water quality.

Durable and long-lasting filter media, offering continuous water purification and reducing the need for frequent replacements.