Air stone Tetra AS 45 for aquarium aeration — compatible with Tetra APS air pumps

Tetra AS 45 is an air stone designed for aquarium aeration that produces a fine, even stream of bubbles to enhance oxygen transfer and gentle water circulation. Compatible with Tetra APS air pumps, it is intended for use in home aquariums, planted tanks and other setups where steady aeration supports fish respiration and biological filtration. The AS 45 is made with a fine-pored structure to ensure uniform bubble distribution and low resistance to airflow.

Advantages

The fine-pored design delivers consistent, small bubbles that improve surface agitation and oxygen exchange without creating strong currents. Low pressure resistance allows air pumps to operate efficiently while maximising bubble output. The air stone is manufactured for long-term use and maintains performance over time when used as recommended. Compatibility with Tetra APS air pumps ensures reliable matching of flow characteristics for typical domestic aquarium setups.

Suitable for

• Freshwater community aquariums
• Planted tanks where gentle circulation is required
• Biological filtration systems that benefit from increased oxygenation
• Small to medium-sized aquaria powered by external air pumps

Key specifications

• Diffusion type: fine-pored air stone for small, uniform bubbles
• Flow characteristic: low pressure resistance for efficient pump performance
• Application: designed for aquarium aeration and circulation
• Durability: manufactured for extended use under normal aquarium conditions
• Compatibility: intended for use with compatible external air pumps designed for aquarium aeration

How to use

Connect the air stone to an appropriate airline tubing and an air pump such as the Tetra APS series, ensuring airtight connections. Position the air stone near the bottom of the aquarium or where improved circulation is desired, leaving space around it for unobstructed bubble rise. Start the pump and verify that the stone produces an even stream of fine bubbles; if output is weak, check tubing for kinks and ensure the pump provides sufficient pressure. Periodically clean or replace the air stone if bubble size increases or output decreases due to clogging or mineral buildup.

Usage recommendations

For consistent performance, use the air stone with an air pump matched to the aquarium size and avoid submerging the pump in water. Clean the air stone by gently scrubbing or soaking in a mild vinegar solution to remove deposits, rinse thoroughly before reuse, and replace when cleaning no longer restores bubble quality.