Replacement diaphragm for the PondOne O2 plus 4000 air pump.

If your air pump has reduced in efficiency or stopped working the most common cause is often a worn or damaged diaphragm. If you have opened your air pump and seen the diaphragm has become torn or otherwise damaged it is time to replace it!

Replacing your diaphragm is straightforward to do and can easily be done at home. We are always more than happy to do free repairs in store as well.

If you have any questions about damaged or broken pumps, or are unsure if this diaphragm is correct for your model, please do not hesitate to contact us.