The felt washer of the EHEIM outlet may become clogged after some time. This will lead to an increased counter pressure reducing the flow rate and increasing the wear to the diaphragm. You should therefore replace the felt wahser of your EHEIM outlet at regular intervals. Please change also the air filter of your air pump regularly.
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- 2 pieces Air filter for air pump 100, 200 and 400
- 2 pieces Felt washer for outlet.
Original EHEIM spare part no: 7400030