1. Ensure Proper Media Setup: Make sure the filter media is stacked all the way to the top and that the canister is completely filled with water. This is crucial for proper priming and operation.
  2. Check the Impeller and Shaft: Verify that the impeller and its shaft are correctly seated in their fittings. If not properly aligned, the motor won't run.
  3. Verify the Lid Seal: Ensure the lid is tightly secured. An airtight seal is necessary to maintain proper pressure and prevent air from entering the system.
  4. Prime the Filter: If the filter isn't self priming, you may need to manually fill the canister with water to eliminate airlocks.
  5. Inspect for Air Leaks: Check all connections, including hoses and seals, for any signs of air leaks. Even a small leak can prevent the filter from operating correctly.
  6. Test the Power Supply: Ensure the filter is plugged into a functioning power outlet.


If you've gone through these steps and the filter still isn't running, you might need to purchase spare parts online.

For a visual guide on setting up and troubleshooting the Boyu EF-05, you might find this video helpful.


All Pond Solutions no longer sell or stock this item.