Tetra Whisper Air Pump (Non-UL) by Tetra.

Of course this is intended for use with an aquarium.  Homebrewers use similar pumps to aerate wort.  Aeration can help reduce lag times, encourage yeast cell reproduction and produce more vigorous fermentations.

Typically you would use both an aeration stone and an inline filter along with this.

What are others saying?  Search the product’s Amazon reviews for “wort” – may include reviews for other sizes or variations

Tetra Whisper Easy to Use Air Pump for Aquariums (Non-UL) – note that multiple variations of this product may be available, as such a different version may appear at this link

More Fermentation Related!

• Our Fermentation Related Reviews – Fermenters and More
• Yeast Starters and Fermentation Resource Page
• Yeast: The Practical Guide to Beer Fermentation
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Oxygenation and Aeration Supplies at William’s Brewing

Make sure the components you use are compatible and rated for your intended application.  Contact manufacturer with questions about suitability or a specific application.  Always read and follow manufacturer directions.