Tetra Whisper Aquarium Power Filter

Changing the Bio-Bag®: When water flows excessively from the Wonder Tube Chamber into the aquarium, it is time to change the Bio-Bag®. The Bio-Bag® should be changed once per month to prevent backflow and avoid filtration problems resulting from a clogged Bio-Bag®.

Using a ready-to-use, assembled Bio-Bag®

• Remove filter box cover.
• Lift Bio-Bag® and allow excess water to drain into filter box.
• Dispose in garbage can.
• Rinse new Bio-Bag®, insert into filter, replace filter cover.

Using an unassembled Bio-Bag®

• Remove Bio-Bag® from filter, allowing excess water to drain into filter box.
• Remove clip from frame, fold up frame flap, and remove floss bag from frame. Place new floss bag over frame.
• Add one packet of Ultra-activated® carbon.
• Fold flaps of Aerobic Frame® over filter bag and replace clip.
• Rinse Bio-Bag®, insert into filter, replace filter cover.

Maintaining the Energizer: Caution: Only remove Energizer when absolutely necessary.

• Unplug power cord, empty filter box, and place it upside down on a flat surface.
• Grasp Energizer with one hand and filter box with the other. Gently turn Energizer counter-clockwise until its sidewall is parallel to the raised line on the bottom of the filter box.
• Hold Filter Box with one hand and gently pull the Energizer with the other. (If necessary, rock the Energizer back and forth to ease removal.)
• Clean inside of Energizer Well with a Q-tip Cotton Swab. Do not use a metal instrument of any kind. Before replacing Energizer, wet the “o-ring” with water, or coat its surface with a small amount of non-medicated petroleum jelly.
• Replace Energizer and fill filter box with water. Check to be sure that Energizer is seated properly and does not leak. (When seated properly, the red o-ring will not be visible.)
• Re-install filter.

Cleaning The Wonder Tube®:

• Unplug power cord and remove filter box cover.
• Lift Wonder Tube® out of filter.
• Remove Magnet Impeller Assembly.
• Clean all parts under running water. If needed, use a filter stem spring brush.
• The Flow Control Knob can be removed to aid in cleaning. Before replacing the knob, wet its “o-ring” with water, or coat the surface of the o-ring with a small amount of non-medicated petroleum jelly.
• Reinstall the Wonder Tube.