Fermonster Carboy - 6 gal. With Spigot

Fermonster Carboy - 6 gal. With Spigot

Accessories for your Fermonster  
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The Ported Fermonster is a brand new fermenter designed specifically for fermentation. MoreBeer! gave product feedback for over 2 years of development and we think they nailed the design. The large lid allows for easy filling and makes hop or oak additions a breeze. The smooth sides are fantastic for sanitization - no ribs or texture to collect yeast or bacteria.  The 6 gallon size is great for most fermentations, and the larger 7 gallon is available for even bigger beers. The punted bottom allows sediment to collect to the sides so that you can siphon liquid from the center.  Because they are made from virgin PET plastic they nearly unbreakable and a lot safer than similar glass carboys. Also notice the conical top which reduces surface area if you plan to store beer or wine long term.  

These ported versions come with our plastic spigot (FE347), allowing for easy racking and sampling!

Made from heavy PET plastic, the same material used in 2 L soda bottles, which is nearly impermeable to oxygen penetration.  Due to the thickness of the material and the overall geometry the Fermonster does not require ribs or dimples for stability.  That results in a super smooth interior surface that reduces yeast and sediment buildup making it the easiest to clean, most sanitary PET carboy on the market.  The huge 4" opening makes filling a breeze, and cleanup is as easy as wiping down the inside.  Fermonsters are easily moved by hand or consider using our Carboy Carrier for even greater ease of use.

These fermentors are completely air-tight and the lids sealed tight with an O-Ring.  Additional O-Rings and Lids both with and without holes are available for purchase, see our You Might Also Need items below.


  • 4" wide mouth carboy - easy to clean!
  • Ported version inlcudes spigot for easy racking
  • Food grade PET plastic construction is nearly impermeable to oxygen penetration
  • No hard to clean dimples or ribs
  • Volume Markers at 5 and 6 Gallons
  • Punted bottom for less sediment transfer during racking
  • O-Ring and Lid with one hole is included (Fits #10 Stopper)
  • Additional O-Rings and Lids available
  • Weight: 1.5 lbs
  • Temperature Limit: 140° F
  • Height: 19.25 inches
  • Diameter: 11.25 inches
  • Completely taste and odor free
  • Perfect for Beer, Wine, Cider, Mead, Kombucha or any other fermented beverage!
  • Thick walls for better oxygen barrier.
Item # FE256
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 2 LBS
Community Q&A

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Why did you choose this?
MoreFlavor Store
for culturing marine algae
Kyle R W on Mar 2, 2023
Will fit in my fermentation chamber and upgrade to buckets.
stephen g on Nov 11, 2022
for culturing marine algae
Kyle R W on Mar 2, 2023
Quality for the price and availability
Kenneth W on Jan 27, 2023
Will fit in my fermentation chamber and upgrade to buckets.
stephen g on Nov 11, 2022
Had one, got "borrowed"..
Timothy P on Oct 25, 2022
ease of use and cleaning, size
russell b on Oct 8, 2022
mark h on Sep 13, 2022
My Glass carboys are getting to heavy to move full of wine.
Matthew W on Aug 26, 2022
For multiple batches
Robert M on Jul 15, 2022
It was a reasonable size for 5 gallon batches of beer.
William Rogers, Jr. on Jun 11, 2022
Because I need it
James Y on Mar 18, 2022
already got one and just wanted another
Titus N on Jan 11, 2022
ease of use and cleaning
russell b on Nov 15, 2021
It works good
William B L on Nov 12, 2021
Wanted something lighter and easier to handle than my glass carboy. And it has a spigot to make racking easier.
Bruce H on Nov 12, 2021
adding a secondary fermenter
Joseph S on Nov 11, 2021
Excellent value
Harold F on Nov 9, 2021
easiest way to clean and transfer wine
Frank V on Sep 14, 2021
JIMMY W on Jul 23, 2021
I have a 3 g one and these are great fermenters for the money
Gary N on Jun 11, 2021
Seems to be better quality than other plastic options
Julia D on May 12, 2021
I need more secondaries and these work great and are easy to clean.
Mark s on May 7, 2021
Large top for easy dryhopping
RANDALL B on Apr 29, 2021
Very convenient for cleaning and transferring.
Nathaniel on Apr 27, 2021
Matches the one I'm currently using, easy to clean won't break.,
Kyle M on Apr 13, 2021
James on Apr 13, 2021
Because you don't have a 5 gallon one. For secondary Fermentation .
James Duclos on Mar 31, 2021
Has. A lid
Tom F on Mar 29, 2021
Wanted a secondary with more head space
Michael S on Feb 28, 2021
Best cardboys easy to clean
Jesse Velez B on Feb 19, 2021
had spicket
JAMES G on Feb 17, 2021
Recommended for beginning brewing
Eric R on Jan 20, 2021
more beer
Jeremy M on Jan 16, 2021
Long term secondary
Joe Keesling on Jan 15, 2021
JOHNNIE S on Jan 12, 2021
Nicely fits a five gallon beer kit
Willem J on Jan 5, 2021
2 reasons: Unbreakable, wide mouth for dry hopping in bag.
Joshua B on Dec 15, 2020
replacing several that I already have
Brent B. on Dec 11, 2020
Way over it with glass carboys.
Jim Deasy on Dec 2, 2020
like the wide mouth for cleaning and adding ingredients
Daniel C on Nov 30, 2020
Glass fermenter is too heavy and can break. This is safer and easier.
Mary S on Nov 26, 2020
Great secondary fermenter
Peter b on Nov 12, 2020
Will be brewing cider and beer simultaneously, a second carboy is necessary
Wyatt H on Oct 3, 2020
Love it
Greg H on Aug 11, 2020
Aging sour
Kevin M on Jul 24, 2020
Upgrade from 3 gallon
David H on Jul 16, 2020
Can see fermentation, easy to clean with the wide mouth, spigot
John Sullivan W on Jul 15, 2020
Easy cleaning
Valued C on Jul 1, 2020
size, seems easy to clean, spigot
needed another fermentor for lagering
Phillip Schmidt on Jun 25, 2020
Cheaper than Spiedal and right size
Greg H on Jun 20, 2020
Quality for the price and availability
Kenneth W on Jan 27, 2023
Had one, got "borrowed"..
Timothy P on Oct 25, 2022
I'm thinking of using this for the clearing step for 6 gallon wine kits, but it seems that the wide mouth would provide a lot more surface area than the narrow neck of a standard carboy, with a lot more potential oxygen exposure. The description mentions the 'conical top which reduces surface area'. What does that mean?
Steven Stark on Jun 3, 2021
BEST ANSWER: The conical top is where you see the whole carboy narrowing toward the lid there. You're right that the surface area is greater than that of a regular carboy shape. Also since it's plastic there will be a tiny bit of oxygen that gets through the walls over time too. Pretty much if you're not storing your wine for longer than two weeks while it clarifies you shouldn't really have any issues.

4.3 / 5.0
29 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 3 out of 5
Good for many uses, but mysteriously cracked
This has been great for lagering in my fridge and secondary for wine ferments. Haven't had too many issues for the first few batches other than it being a bit unwieldy.

Unfortunately I just pulled it out to use as a secondary for a cabernet and realized there's a large crack in the interior of the bottom. Doesn't seem like it goes all the way through, but don't trust it with any weight and it's an infection vector. Not sure how it got there, as I haven't had any impacts or drops with it.

I just bought another to replace it since I'm hoping it was a fluke and they're just about the most cost effective option for this type of fermenter. So hopefully I don't regret the replacement, but if more cracks show up I'll have to move on to another type of fermenter.
February 26, 2023
over 2 years ago
Rated 5 out of 5
Good quality and much less expensive than stainless fermenter’s
Would recommend. My go to for fermenting home brew. I like to see what’s going on.
July 23, 2022
1 year ago
Rated 5 out of 5
I like this fermentor because of its smooth surface. It doesn't have a lot of molded 'bubble' features which harbor crud from being cleaned. The spigot make transfers easier.
My only to quibbles are. 1.) The mouth is a bit too narrow to allow my massive forearms access for cleaning, and 2.) the graduations are hard to discern - I had to highlight them with a sharpie. Minor quibbles.
May 4, 2021
over 3 years ago
Rated 4 out of 5
It works fine , doesn’t seem to be anything special though, kind of expensive in my opinion
March 22, 2021
over 3 years ago
Rated 4 out of 5
It's great with a caveat
I like this and will continue to use but it's not perfect. First of all, the plastic is very thin which in itself isn't that big of a problem but coupled with the fact the lid is incredibly hard to remove (hence they sell a lid remover) even when barely tightened that makes the thin side walls a small concern. While trying to get the lid off AND hold the fermenter the sides literally crushed in. Luckily the fermenter was empty or otherwise there would have been beer all over the place. I use a giant pair of slip-joint pliers now when removing the lid but the easily crushed sides are still a concern. But, I do like it even with these small issues.
March 15, 2021
over 3 years ago
Rated 5 out of 5
Great product to meet my needs and round out my equipment
Only issue is that of the three carboys I was able to install the spigot on only one with the supplied (1) tapered washer without it leaking. Luckily I had extra spigots on hand for my 6.5 gallon primary buckets and used the flat washers from them to prevent the leaks.
They may just want to consider providing two flat washers.
March 12, 2021
over 3 years ago
Rated 5 out of 5
FerMonster 6 Gallon Carboy With Spigot
Love the new widemouth carboy. Makes filling and cleaning soo much easier. Will order another soon.
December 19, 2020
over 3 years ago
Rated 5 out of 5
Great Fermenter
Works great for long term sours. Seems to be one of the better options out there for "non-glass" carboys.
April 23, 2020
over 4 years ago
Rated 5 out of 5
good deal for price
So far great experience with this carboy. Easy to clean. Advantage of glass is that you can easily transport it when you have 5+ gallons of beer in it
April 19, 2020
over 4 years ago
Rated 5 out of 5
Works well
I have the competition's version of this also so here's what I'll say. The lid is a definitive improvement but the competition's lid was never as big of a problem for me as others have indicated. The smooth texture is slitely easier to clean and finally the plastic walls seem a little thicker just judging by the way it feels while handling it both full and empty. Speaking from experience, if your considering a large opening fermenter, they are the way to go and much easier to clean.
December 22, 2019
over 4 years ago