1. Product Overview
The Tetra Whisper IQ Power Filter is designed to maintain clean and clear aquarium water. This filter features a sound shield for quiet operation and Stay Clean technology to reduce buildup and stabilize pH levels. It includes a bio-scrubber for biological filtration and a smart path spillway for water oxygenation.

Image 1.1: The Tetra Whisper IQ Power Filter 45-Gallon in its packaging, highlighting its features and capacity.
2. Important Safety Instructions
WARNING: To guard against injury, basic safety precautions should be observed, including the following:
- Read and follow all safety instructions and all important notices on the appliance before using. Failure to do so may result in loss of fish life and/or damage to the appliance.
- DANGER: To avoid possible electric shock, special care should be taken since water is employed in the use of aquarium equipment. For each of the following situations, do not attempt repairs yourself; return the appliance to an authorized service facility for service or discard the appliance.
- If the appliance falls into the water, DO NOT reach for it. First, unplug it and then retrieve it. If electrical components get wet, unplug the appliance immediately.
- Carefully examine the appliance after installation. It should not be plugged in if there is water on parts not intended to be wet.
- Do not operate any appliance if it has a damaged cord or plug, or if it is malfunctioning or has been dropped or damaged in any manner.
- To avoid the possibility of the appliance plug or receptacle getting wet, position aquarium stand and tank to one side of a wall-mounted receptacle to prevent water from dripping onto the receptacle or plug. A “drip loop” should be arranged by the user for each cord connecting an aquarium appliance to a receptacle. The “drip loop” is the part of the cord below the level of the receptacle, or the connector if an extension cord is used, to prevent water from traveling along the cord and coming into contact with the receptacle. If the plug or receptacle does get wet, DO NOT unplug the cord. Disconnect the fuse or circuit breaker that supplies power to the appliance. Then, unplug and examine for presence of water in the receptacle.
- Close supervision is necessary when any appliance is used by or near children.
- To avoid injury, do not contact moving parts or hot parts such as heaters, reflector, lamp bulbs, or similar.
- Always unplug an appliance from an outlet when not in use, before putting on or taking off parts, and before cleaning. Never yank cord to pull plug from outlet. Grasp the plug and pull to disconnect.
- Do not use an appliance for other than intended use. The use of attachments not recommended or sold by the appliance manufacturer may cause an unsafe condition.
- Do not install or store the appliance where it will be exposed to the weather or to temperatures below freezing.
- Ensure an appliance mounted on a tank is securely installed before operating it.
- Read and observe all the important notices on the appliance.
- If an extension cord is necessary, a cord with a proper rating should be used. A cord rated for less amperes or watts than the appliance rating may overheat. Care should be taken to arrange the cord so that it will not be tripped over or pulled.
3. Package Contents
Before beginning installation, verify that all components are present and undamaged. Refer to the exploded view diagram for identification of parts.
- Filter Housing with Lid
- Motor Assembly
- Adjustable Intake Tube
- Intake Strainer
- Bio-Scrubber (blue grid)
- Filter Cartridge (Large size, blue packaging)
- Sound Shield

Image 3.1: Exploded view of the filter components, illustrating each part for assembly.
4. Installation and Setup
Follow these steps to properly install your Tetra Whisper IQ Power Filter:
- Assemble Intake Tube: Connect the adjustable intake tube sections and attach the intake strainer to the bottom.
- Install Motor: Secure the motor assembly into the designated slot at the bottom of the filter housing. Ensure it is firmly seated.
- Insert Bio-Scrubber: Place the blue bio-scrubber grid into the filter housing. This provides surface area for beneficial bacteria.
- Insert Filter Cartridge: Slide a new Tetra Whisper Bio-Bag Filter Cartridge (Large size) into the filter housing. Ensure the blue clip is facing upwards and securely positioned.
- Attach Sound Shield: Position the sound shield between the motor and the filter body to minimize operational noise.
- Mount Filter: Hang the filter securely on the back rim of your aquarium. Ensure the intake tube extends into the water to the desired depth. The water level in the aquarium should be above the minimum water line indicated on the filter.
- Adjust Intake: The intake tube is adjustable to fit various aquarium depths. Adjust it so the strainer is not resting on the substrate and is clear of debris.
- Power Connection: Create a drip loop with the power cord. Plug the filter into a grounded electrical outlet.

Image 4.1: Detailed diagram illustrating the filter's features and how components fit together.
5. Operating Instructions
Once installed and plugged in, the Tetra Whisper IQ Power Filter is designed for self-priming. The submerged motor will start automatically, drawing water into the filter.
- Initial Start-up: Ensure the filter is fully submerged to the minimum water line before plugging it in. The filter will begin to draw water and operate.
- Flow Control: The filter features an adjustable flow control. Rotate the dial on the top of the filter to increase or decrease the water flow rate. This allows for customization based on your aquarium's needs, such as reducing flow for delicate fish like Bettas or for planted tanks.
- Quiet Operation: The integrated sound shield minimizes motor noise, ensuring quiet operation.
- Water Oxygenation: The smart path spillway oxygenates the water and agitates the surface, promoting a healthy aquatic environment.

Image 5.1: The filter in operation, showing water returning to the aquarium.
6. Maintenance
Regular maintenance is crucial for optimal filter performance and a healthy aquarium environment.
6.1 Filter Cartridge Replacement
- Replace the Tetra Whisper Bio-Bag Filter Cartridge monthly, or sooner if water flow is significantly reduced or the cartridge appears heavily soiled.
- Always use large-sized Tetra Whisper Bio-Bag Filter Cartridges (blue packaging) for this 45-gallon model.
- To replace: Unplug the filter. Remove the old cartridge and discard it. Rinse the new cartridge briefly under tap water to remove any carbon dust, then insert it into the filter housing. Re-plug the filter.

Image 6.1: A Tetra Whisper Bio-Bag Filter Cartridge, featuring activated carbon and dual-sided floss for comprehensive filtration.
6.2 Cleaning the Filter
- Periodically, unplug the filter and remove it from the aquarium.
- Disassemble the intake tube and motor assembly.
- Rinse all components (except the filter cartridge) under clean water to remove accumulated debris. Do not use soap or detergents.
- Gently clean the impeller and impeller well within the motor assembly.
- Reassemble the filter and reinstall it in the aquarium.
7. Troubleshooting Guide
| Problem | Possible Cause | Solution |
|---|---|---|
| Filter not starting or low flow | Power outage; clogged intake tube or impeller; filter not primed; water level too low. | Check power connection. Clean intake tube and impeller. Ensure water level is above minimum line. If filter is dry, fill filter box with aquarium water before plugging in. |
| Excessive noise | Impeller obstructed or damaged; filter not seated correctly; water level too low. | Unplug and clean impeller. Ensure filter is securely mounted and water level is adequate. Check for proper assembly of sound shield. |
| Water not clear | Clogged filter cartridge; insufficient filtration for tank size; overfeeding. | Replace filter cartridge. Ensure filter is appropriate for your aquarium size (this model is for up to 45 gallons). Reduce feeding amounts. Perform partial water changes. |
| Water leaking from filter | Improper assembly; cracked housing; water level too high. | Unplug and check all connections and housing for damage. Ensure water level is not exceeding the filter's capacity. |
8. Product Specifications
- Model: Whisper IQ Power Filter 45-Gallon
- Item Model Number: 78003-00
- Capacity: Up to 45 Gallons
- Flow Rate: 215 GPH (Gallons Per Hour)
- Noise Level: Less than 40 dB
- Filter Cartridge Type: Tetra Whisper Bio-Bag Filter Cartridges, Large size (blue packaging)
- Dimensions (LxWxH): Approximately 7 x 6.25 x 8.75 inches
- Item Weight: 2.3 Pounds
- Material: Plastic
- Color: Black
9. Warranty Information
Tetra products are manufactured to high-quality standards. For specific warranty details, including duration and coverage, please refer to the documentation included with your purchase or visit the official Tetra website. Keep your proof of purchase for warranty claims.
10. Customer Support
For further assistance, questions, or to purchase replacement parts, please contact Tetra customer support:
- Phone: 1-800-423-6458 (TetraCare)
- Website: Visit the official Tetra Store or www.tetracare.com
- User Manual (PDF): A downloadable PDF version of the user manual may be available at https://manuals.plus/m/ab39d94884e1fd165448665c0ab3ebc651f3064331980745651b0eaf0b7ef633

Image 10.1: TetraCare contact information and related product suggestions.





