FastRack Twin Bubble Airlock and Carboy Bung 2-Pack | Fermentation Airlocks for Homebrewing Beer, Wine, Mead, and Kombucha

• WHAT'S INCLUDED: With this purchase, you'll receive two twin bubble airlocks and two universal-fit carboy bungs for managing fermentation of beer, wine, mead, or kombucha. FastRack airlocks are made from food-grade, transparent plastic—stronger and clearer for easy monitoring. The airtight design helps prevent oxidation, and the airlocks automatically release pressure during fermentation without manual effort.
• EASY & SIMPLE TO USE: Insert the assembled airlock into the hole of the rubber stopper that fits your current jug or carboy. Fill the Bubbler Airlock with water and insert the drilled stopper or bung to vent gasses during fermentation. The airlock cap should always stay on top when in use to allow gas to escape and prevent the water inside from quickly spilling out if tipped over.
• HOW IT WORKS: Airlocks enable CO2 to be released during fermentation and trap oxygen from entering the fermenter. The bubbler style airlock is the preferred airlock for secondary fermentation, as it is possible to monitor the pressure inside the fermenter, and is the go to winemaking airlock.
• WIDELY USED: The fermentation airlock can be used in various fermentation projects to preserve food as well! The brewing airlock can be used to brew craft beer or wine, but also used for sauerkraut, kimchi, etc.
• OUR COMMITMENT TO YOU: At FastRack, we stand behind the quality of our products and the trust our customers place in us. Your experience matters. If your order arrives damaged or incomplete, reach out—we’ll make it right.

• Prepare the Airlock — Fill the twin bubble chamber of the airlock with water or a sanitiser solution up to the indicated fill line. This creates the water seal that allows gas to escape while blocking air.
• Insert into Fermenter — Place the drilled rubber bung or stopper into the opening of your fermenter, carboy, or jug. Ensure it creates a snug, airtight fit to prevent any gas leakage.
• Attach Airlock — Insert the base of the FastRack airlock firmly into the hole of the bung or stopper. Ensure the airlock is seated securely and upright to allow proper function.
• Monitor Fermentation — Observe the airlock for CO2 bubbles escaping. The rate of bubbling indicates the stage and activity of your fermentation. Top up the water level if it evaporates significantly due to ambient heat.

Typical situations where FastRack Twin Bubble Airlock and Carboy Bung 2-Pack | Fermentation Airlocks for Homebrewing Beer helps — illustrative scenarios, not customer reviews.