beaufan 8-Pack Air Stone Compatible with All Biorb Aquariums, Flow/Halo Series, 15 Acrylic Aquarium with 4-Gallon Capacity, Aquarium Filter Accessories, Fit Freshwater & Saltwater Aquariums

• Compatibility: This air stone set is compatible with all biOrb fish tanks, such as the Flow/HALO Series 15 acrylic 4-gallon aquarium. Replacement for all biOrb classic, tube, flow, halo and life aquariums.
• Ample Replacement Supply: This value pack contains 8 air stones, sturdily built for durability and shatter resistance.
• Enhances Rapid Oxygen Circulation: This air stone regulates aquarium pump airflow to create optimal surface movement, boosting water oxygenation and enhancing living conditions for fish and plants.
• Tool-Free Install & Replacement: No tools required—simply remove your biOrb filter cartridge, swap out the air stone, and reattach it. For consistent airflow and optimal system efficiency, we recommend replacement every 3 months.
• Dedicated Beaufan Customer Support: Have any questions about your purchase? Feel free to reach out to our team, and we will handle your enquiry as quickly as we can.

Product description 8-Pack Air Stone Compatible with All Biorb Aquariums, Flow/Halo Series, 15 Acrylic Aquarium with 4-Gallon Capacity, Aquarium Filter Accessories Directions It is recommended to replace the filter media every 3-6 months.