13 Pack Air Stone Compatible with Biorb Aquariums, Stones for Fish Tanks Replacement Freshwater & Saltwater Aquariums

Compatibility: These air stones compatible with biorb aquariums. Unlike ordinary air stones that require trimming or forced installation, these aquarium air stone in easily and seal tightly every time. Durability: The package contains 13 fish tank air stone, each made of high-quality materials and optimized for typical aquarium environments, ensuring long-term structural integrity and robustness to withstand real-world use. Superior Oxygen Flow: These compatible with biorb air stone convert the airflow generated by a nano-air pump into a gentle, steady stream of tiny bubbles that rise smoothly from the bottom to the surface. This gentle movement helps fresh air mix naturally into the water. Ease to Use: No tools required, simply remove the existing filter cartridge, take out the old air stone, insert the new air stones for fish tanks, and then snap the filter cartridge back into place. The replacement process is very simple, even if you have never changed an air stone before. Ready to Use Immediately: Before first use, simply immerse each aquarium air stone completely in clean tap water for one hour. After installation, the fish tank air stone will immediately start bubbling and remain stable. It’s necessary to replace them once they get clogged after weeks or months of usage.