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The Siphonless Big Mouth Bubbler is your best friend in making better, clearer beer. The Big Mouth Bubbler cuts out siphoning all together reducing the risk of inadvertent sloshing around. Transferring is as easy as the turn of a valve which cuts out the need for extra equipment saving you more in terms of time, money and sanitising. This is the 5 US gallon (18.9L) version.


The Big Mouth Bubbler with Tap eliminates the need to siphon your beer while racking, reducing the risk of oxidation and contamination. No need to open a lid, just open a valve and you’re on your way - rack into a secondary vessel or bottle without disturbing the trub. If you’re ready to graduate from a plastic bucket, you’d be well served by the Big Mouth Bubbler.

Each Big Mouth Bubbler Includes:

● Big Mouth Bubbler plastic fermenter
● Big Mouth Universal Lid
● Spigot

You’ll need a either a Small Universal Stopper or a No. 6.5 Stopper.

We recommend using a Big Mouth Bubbler Harness to make moving your Bubbler easier and safer when it's full of wort or beer.

Important: Do NOT fill a plastic Big Mouth Bubbler with hot liquid. The fermentor is only rated up to 60˚C.

Capacity: 5 US gallons (18.9L)
Weight: 1.5kg
Height (lid closed): 56cm
Diameter: 26cm
Mouth Diameter: 14cm
Fermentor Material: PET

Free tip: Save the box and use it as a cover for your Big Mouth Bubbler to assist in maintaining temperature.


Other Big Mouth Bubblers available:

Little Big Mouth Bubbler - 1.4 US Gallon (5.3L) Glass
Big Mouth Bubbler with Tap - 6.5 US Gallon (24.6L) Plastic
Big Mouth Bubbler - 5 US Gallon (18.9L) Glass
Big Mouth Bubbler - 6.5 US Gallon (24.6L) Glass


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Review by
Decent fermenter and the tap means easy transfers. The kid is a bit loose but if primary fermentation isn’t too crazy it stays in place
Overall OK but the lid is frustrating
Review by
Generally, the fermenter is easy to clean and the tap means that I do not have to siphon when racking. However, the lid is a pain! It was difficult to keep it secured in place, especially during primary fermentation. I resorted to gaffer tape before leaving for work in the morning and even then it had popped up by the time I got home in the evening. From what I have read on the Northern Brewer site and Home Brewing forums, it's a common problem.
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