DetailsThe most helpful fermentor ever invented just got even better. Less effort. Better, clearer beer. Don’t just cut out the hassle of cleaning, cut out siphoning altogether! Porting this revolutionary fermentor makes transferring as easy as the turn of a valve. No extra equipment, no extra cleaning, just a sanitized fermentor.
The Siphonless Big Mouth Bubbler® isn’t just easier to use. It’s better for your beer. Fight oxidation and contamination by keeping your fermentor closed for transfers. Never open the lid to insert an auto-siphon, just turn a valve and you’re set. Best of all, you’ll have clearer beer. Gently rack liquid from the spout into secondary without disturbing the trub.
Make your brew day easier and your beer better with the siphonless Big Mouth Bubbler®.
- Ported Big Mouth Bubbler® Plastic Fermentor
- Single Port Universal Lid*
You may also need:
- An airlock (3-piece or S-Bubble)
- A Small Universal Stopper (Drilled or Solid)
- A Harness
- A blowoff hose
- A Dual Port Lid
BIG MOUTH BUBBLER® Product Specifications: Capacity: 5 gallon 6.5 gallon SKU: U41950 U41965 Weight: 3.4 4 Height (w/lid, closed): 22" 23" Diameter: 10" 11" Mouth: 5.5" 5.5" Fermentor Material: PET PET
- Details & Instructions
3.9 / 5.030 Reviewssecondary fermentorperfect for secondary fermentation. sized right and easy to transfer when it is time to keg.December 26, 2018Purchased
2 months agoGreat productWorks great!. Able to stir. Can use it to bottle. Light weight and not fragile.October 25, 2018Purchased
5 months ago5 gallon bib mouth bubblerLove It!! I use the 6.5 gallon for primary and this for secondary...LOVE Both of them. I know people say they have trouble with the lid coming off...here's a 10 cent fix...cut three pieces of 2x6s about 4 inches long. Put two pieces on their side on each side of the fermenter lid...next lay the third piece over the top and place anything heavy on the top. Problem solved!! I love being able to see what is going on inside the fermenter. Need to be careful when cleaning as plastic is easy to scratch...badSeptember 14, 2018Purchased
6 months agoNot bad, I'll get the glass ones eventually.This was part of a special a couple months back. I've tried it once and it worked well. I used it for a 3 week primary & transfered to a bottling bucket for bottling. I got almost no particles on the transfer. Actually less than when using the auto siphon. I was concerned about the spigot seal holding. No issues, it didn't leak.
My gripe is the lid. As others have said, it doesn't seem to stay seated. Mine didn't actually come out, but on brew day after installing lid & airlock, it raised up about 1/2 way to being unseated. My solution was to hold it down with electrical tape. Next brew I think I'm going to try a light duty ratchet strap.Electrical tape to hold down lidJuly 19, 2018Purchased
9 months ago5 gal Big Mouth!I love the 5 gal Big Mouth Ported, as I use it for secondary fermentation as all the excitement of the primary fermentation has settled down. It makes going to bottle a real pleasure.June 10, 2018Purchased
9 months agoBetter than glass on the backBeen using glass for a long time but this is so much easier on the back.June 6, 2018Purchased
9 months agoHandy secondary fermentor.The Big Mouth Bubbler came promptly with the rest of my order from MIDWEST Supplies. It works great as a secondary fermentor when I do 5 gallon batches. I love having the port on the bottom as it removes the need to siphon. The valve is positioned high enough not to pick up the sediment off the bottom. It’s easy to clean because of the big mouth. I’ve never had any issues with the lids staying put as some have suggested. There shouldn’t be any pressure build up if you’re using an airlock anyhow. Can’t go wrong with this!May 11, 2018Purchased
10 months agoNice fermenter that would be great with better lidGot it free as a promotional item. Great as a secondary and makes dry hopping nice and easy. I’m with the others in that the lid won’t stay in place and I’ve had to tape it down.May 8, 2018Purchased
10 months agoThe lid popping is for real, but all else is greatThe lid popping is for real, but all else is great so be prepared to make one of the many inexpensive modifications you can find online. I had some spare cat5 cable I used to tie it down after it popped.May 1, 2018Purchased
10 months agoRidiculously brittle plasticI do home brewing as well as commercial brewing, and In theory I love the idea of this fermenter. I love the wide opening for easy access. There are just a couple flaws that are easily fixable for future manufacturing. The biggest is that the plastic is very thin and brittle. From just mixing around the wort to Oxidize while pitching the yeast, the wort weight cracked the fermentor. I would easily pay 10 bucks more for thicker plastic, increasing the life tremendously. Also, the bubble indent design. Guys, this increases the chances of infection tremendously! Having little indents all on the inside, makes cleaning 89 times more difficult!...and I know home brewers could care less about a bubble design on their fermenter. Not having these will lower your cost too! You're so close to an epic design Big Mouth! PS: I lost a fermentor, and stressed for 2 weeks thinking my wort was infected from the accident. BummerJanuary 4, 2018
- Customer Q&A
Browse 7 questions Browse 7 questions and 34 answersDoes it work as a secondary?BEST ANSWER: Sure, it makes a very good secondary vessel for 5 gallon batches of beer or wine. You can then move the liquid to your bottling bucket with the spigot and a piece of tubing, to eliminate the siphoning. -Mike W, Midwest SuppliesCould I skip bottling bucket, and bottle straight from this if I use it as a secondary?BEST ANSWER: Even when you use it as a secondary fermenter you will get trub at the bottom and while the BMB does good at draining the beer from the top and leaving the trub undisturbed. if you add your bottling sugar, and then stir up the trub it will defeat the purpose. if you are using bottling tablets or carbonation drops then you would not have to disturb the trub and could bottle directly from the valve. hope this helps. CheersDoes this need an airlock?BEST ANSWER: Yes, it does. Note: You'll want to make sure you remove the airlock before transferring your finished beer, to prevent a vacuum effect that will draw sanitizer from the airlock into the fermenter.What is the diameter of the opening?BEST ANSWER: Hey Jim,
Thank you for choosing Midwest Supplies! The top opening has an inside diameter of 5.5" the hole for the spigot is 1". I hope that this helps, have a great day!How much wort is left when you drain the fermenter using the valve?BEST ANSWER: Not much. It seems to be at the perfect height--right above the cake. I'm really happy with mine--way better than a bucket. I've actually got two more on the way.Can I use this for kombucha or is the acidity too high?BEST ANSWER: It is possible, but we would recommend using glass big mouth bubblers for kombucha.Can I buy the valves separately?BEST ANSWER: Yes that is SKU# 40794 Bottling Spigot