Tetra Whisper Power Filter 60 Gallons, Quiet 3-Stage Aquarium Filtration

Troubleshooting Steps
If the filter doesn’t start, lift the Wonder Tube out of the filter and remove the Magnet Impeller
Assembly. Use tweezers to remove any stringy or hair-like material that may have twisted around the
shaft. Hold the assembly by its endcaps and try to spin the magnet. If the magnet does not spin freely,
rinse under a jet of tap water to “unlock” it. Now hold the magnet and try to spin the impeller one turn in
either direction. If the impeller doesn’t spin freely, rinse under a jet of tap water to “unlock” it. If rinsing
doesn’t free up the magnet or impeller, replace the assembly.

If you’ve replaced the assembly and the filter still won’t start, it is possible the carbon or aquarium
gravel may have lodged at the bottom of the Energizer Well. Slide the Wonder Tube up and down in the
filter box (with water still in it). If this doesn’t work, unplug the filter and empty it in your sink. Insert a
drinking straw–not a metal instrament–into the Energizer Well and try to break up any sediment. Rinse
the Energizer Well and re-assemble the filter.

To determine if the Energizer is functioning, plug it into an electric outlet and hold the Magnet Impeller
Assembly against its outside wall. If you feel a magnetic attraction, the Energizer is functional. If not,
replace the Energizer.