Sweetwater® Silica Airstones

Lasting clog-resistant performance ensures proper pond aeration. Silica Airstone Diffusers for Pond Aeration Pumps feature a uniform pore structure for low airflow resistance AND resistance to clogging. The result is even and reliable bubble production for proper aeration (gas exchange) in ponds and water gardens with little or no maintenance. Perfect for use with compact low-pressure blowers or pond air pumps. Self-weighting when used with typical tubing lengths. Machined from a solid block of glass-bonded silica. Silica Airstone Diffusers for Pond Aeration Pumps fit standard 3/16" airline tubing. Small measures 1-1/2" x 1/2" x 1/2" and Medium measures 3" x 1" x 1".

Please click on "More Information" for directions for use.

• Attach the Silica Airstone Diffuser to the airline tubing of your air pump. Note: Be sure the air pump is turned off.
• Place airstone in the pond or water garden.
• If needed, hold airstone down with a rock or other weighted object.
• Turn air pump on. To regulate airflow, use an aquarium air valve or gang valve.

General Information

Sweetwater® Air Diffusers
As close to perfect as diffusers get!
Sweetwater diffusers are the highest-quality ceramic-type air diffusers on the market today. They're machined from a solid block of glass-bonded silica. Because dust and dirt particles up to 30 microns in size will pass right through these diffusers, there's no need for expensive air filters. And with an air resistance of less than .25 psi, Sweetwater glass-bonded diffusers are compatible with economical low-pressure blowers.

They produce a uniform medium/fine bubble and are very resistant to clogging. And when cleaning does become necessary because of a buildup of calcium precipitate or bacteria, an acid bath restores them to like-new performance. Made in USA.

Sweetwater: The Best
With their round grain pore structure, low resistance to airflow, uniform porosity and resistance to clogging, Sweetwater diffusers are clearly the best diffusers available for general aquaculture aeration.

Smaller pores don't necessarily produce smaller bubbles. Sweetwater diffusers are engineered to produce the smallest bubble possible within the constraints of a reasonable service life. In most soft water applications, they won't need to be cleaned for more than a year. Note that water pH in excess of 9.0 will shorten the diffuser life. Self-weighting when used with typical tubing lengths.