An instructional video showing how to replace the diaphragm cartridges in Aquascape's Pond Air 2 and Pond Air 4 Aeration systems.
The Aquascape 2-Outlet and 4-Outlet Pond Aerators use replaceable diaphragm cartridges to produce airflow. If your aerator has reduced airflow or stops producing air, the diaphragm cartridges may be worn and require replacement.
Applicable products and replacement parts
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2-Outlet Pond Aeration Kit — Item #75000
- Replacement part: 2-Outlet Pond Aerator Replacement Cartridge — Item #75003
- Includes one replacement diaphragm cartridge.
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4-Outlet Pond Aeration Kit — Item #75001
- Replacement part: 4-Outlet Pond Aerator Replacement Cartridge Kit — Item #75004
- Includes two replacement diaphragm cartridges.
Compatibility: These replacement cartridges are designed for the corresponding Pond Aerator models manufactured from 2012 to the present.
How to replace the diaphragm cartridges
Important: Always disconnect the aerator from electrical power before opening the housing or performing maintenance.
- Disconnect power. Unplug the aerator and place it on a clean, dry work surface.
- Remove the housing cover. Remove the screws from the bottom of the compressor and carefully lift off the cover.
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Remove the old diaphragm cartridge(s). Locate the diaphragm assemblies and remove their mounting screws.
- 2-Outlet Aerator: Remove the single diaphragm cartridge.
- 4-Outlet Aerator: Disconnect the internal air tubing as needed and remove both diaphragm cartridges.
- Install the replacement cartridge(s). Position the new assemblies and secure them with the mounting screws.
- Reconnect the tubing. On the 4-Outlet Aerator, reconnect the internal air tubing to the replacement cartridges.
- Reinstall the housing cover. Replace the cover and secure it using the original screws. On the 2-Outlet Aerator, the diaphragm cartridge moves into its final seated position as the cover is installed.
- Test the aerator. Reconnect power and confirm that air is flowing through the aeration discs.
Instructional video
Watch the Aquascape instructional video demonstrating diaphragm replacement for the 2-Outlet and 4-Outlet Pond Aerators.
Watch video: How to replace Pond Aerator diaphragms
If airflow remains low
If the aerator continues to produce little or no air after replacing the diaphragm cartridges:
- Check the airline tubing for kinks or restrictions.
- Verify that the check valves are installed in the correct direction.
- Inspect the aeration discs for blockages.
Additional replacement components are available:
For additional product information and maintenance instructions, refer to the 2-Outlet and 4-Outlet Pond Aeration Kits instruction manual.