Aquarium Air Stones Oxygen Bubbler, 4 Inch Fish Tank Quiet Oxygen Aerator, Air Pump Accessories Airstones for Fish Tank and Hydroponics

Choose for Tank and Air pump wattage: This air diffuser area at 4 inches, recommended for 35 - 100 gallon freshwater and saltwater tanks. Notice: for deeper water levels, you may need to opt for a higher wattage air pump to ensure optimal performance.

Produces Small, Quiet Bubbles: Bubble diffuser releases compressed air into the water as tiny bubbles. This increases the contact area and exchange rate between air and water, providing ample oxygen for your fish without creating excess noise.

High Dissolved Oxygen Rate: 4 inch air stone disc features a large surface area that releases smaller, denser and more uniform bubbles, effectively increasing oxygen levels while lowering CO2 and raising PH in your aquariums, fish tanks and hydroponic growing systems.

High-Temperature Sintered Nanomaterials: Durable, Corrosion-Resistant, and Dirt-Resistant for Long-Term Use. Low Power Consumption for Energy Savings and Environmental Protection. Notice: regular cleaning is recommended to ensure optimal performance.

Products received faulty, damaged, or not as described are eligible for a return, refund, or replacement in accordance with local consumer laws. We are committed to ensuring all products meet the standards of quality and reliability expected by our customers. Please note that we do not accept returns or provide refunds for change of mind. We encourage you to carefully consider your purchase to ensure it meets your needs and expectations.

Delivery Timeframe：Please note that we cannot guarantee the exact date of arrival, and the delivery timeframes (excluding weekends and public holidays) are as follows:

For customers in Victoria, approximately 7-10 working days;

For customers in NSW, SA, ACT, and QLD, approximately 9-12 working days;

For customers in WA, NT, and TAS, approximately 9-12 working days.