Tetra Whisper IQ 45

Adjustable 20–215 GPH flow; tank-size suitability is not established.

Adjustable-flow HOB filter with a motor sound barrier and Large Bio-Bag cartridge.

Specifications checked with the manufacturer on 2026-09-07.

Consider: Its 20 GPH minimum is higher than the IQ 20’s 10 GPH minimum. If very gentle output is the priority, compare that lower-flow model before choosing.

US product record · Model / item 78003. Confirm the model and package contents before purchase.

Specifications that affect fit

Manufacturer capacity: Capacity not specified
Power: Not specified
Supply voltage: Not specified
Dimensions: Dimensions not specified
Pump output: Not specified
Filter circulation: Not specified
Maximum flow: 215 GPH

Use the exact nameplate watts and your real schedule in the aquarium electricity cost calculator. Leave an unpublished wattage blank.

Pump output, filter circulation and maximum flow describe different test conditions. These figures do not establish the flow in your installed aquarium.

Before choosing this model

Confirm model 78003.
Check minimum flow against fish and planting needs.

Still to confirm

A gallon rating and body dimensions are unresolved. For a purchase based on tank size or tight rear clearance, use a model with documented limits or inspect this exact package before deciding.
Read watts from the exact unit label before calculating electricity; do not enter an unknown load as zero.

Read the equipment selection guide alongside these model details. A rated capacity does not settle livestock needs, room conditions or physical clearance.

Choose and care for mechanical, biological and chemical media before buying replacement supplies.

Included items & upkeep

filter body
flow control
Bio-Grid

Plan for the routine work

Unplug before impeller access.
Use the manual’s impeller and intake cleaning steps.

Enter your own supply prices and replacement schedule in the first-year cost planner. Use the exact manual for maintenance intervals and service steps.