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How often should you clean a base pump in a marine aquarium?

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Regular cleaning of the base pump is a key element in maintaining optimal conditions in a marine aquarium. Base pumps are responsible for maintaining proper water flow, which is essential for effective water circulation, nutrient distribution, and waste removal. Neglecting regular cleaning can lead to reduced pump performance, which in turn can negatively impact the health of the aquarium ecosystem.

Factors influencing the frequency of cleaning

  1. Biological load: A higher number of fish and other organisms in the aquarium generate more waste, which can result in faster contamination of the pump. In such cases, more frequent cleaning may be necessary.
  2. Amount of bacteria in the system
  3. Type and model of pump: Different pumps have different tolerances for contamination and may require different cleaning intervals.
  4. Overall water quality: If the water in the aquarium tends to get dirty quickly or if there are water quality issues, more frequent pump cleaning may help maintain stable conditions.

Recommended cleaning frequency

It is usually recommended to check and potentially clean the base pump at least once every 3-6 months. However, depending on the factors mentioned above, some aquarists may find that their systems require cleaning monthly or even more frequently. It is also a good idea to check the manufacturer’s instructions for the recommended cleaning frequency of their base pumps.

Cleaning process:

  1. Turn off and disconnect the pump: Always turn off the pump before cleaning to avoid damaging both the pump and yourself.
  2. Disassembly: Remove all easily accessible parts of the pump that can be cleaned separately. Remove the impeller.
  3. Mechanical cleaning: Use a soft brush or sponge to remove accumulated dirt and deposits from the external and internal parts of the pump.
  4. Rinsing: Thoroughly rinse all parts in clean water (preferably RO).
  5. Inspection and assembly: After cleaning, thoroughly check each part for damage or wear. Reassemble the pump, ensuring that all components are properly secured.
  6. Testing: After reassembly and reconnecting the pump, check its operation to ensure it is working correctly.


Regular cleaning of the base pump not only extends its lifespan but also ensures that the marine aquarium remains healthy and clean, which benefits the well-being of all its inhabitants.

About the author

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Marek Protasewicz

Reefkeeping has been my passion for over 10 years now. I love learning. The hobby has taught me many valuable lessons, patience being the best example. Combining work and passion is my path. I run Crazy Coral, a marine aquarium shop, for a number of years. Building this business from the scratch I learnt from my own mistakes at a heavy cost.
Later I managed a project aimed at development of methods for quick growth of Corals in non-natural conditions. The project was carried out by Get Sales, Poland. Presently, I am responsible for distribution strategy at Reef Factory, of which I am a co-founder. The company produces smart devices for marine aquaristics. The last projects I have been involved in are Social Reef and ReefPedia.

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