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!
Item # FE256
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 2LBS
Community Q&A

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Why did you choose this?
MoreFlavor Store
Peter F on Sep 11, 2019
Best one I've used
Valued C on Aug 28, 2019
Peter F on Sep 11, 2019
lighter, easier to clean, and easier to transfer than with glass carboy
Chris H on Aug 28, 2019
Best one I've used
Valued C on Aug 28, 2019
Need a second fermenter and like the first one
Michael F on Jul 15, 2019
easy cleaning and hop additions
david k on May 8, 2019
Already have one - adding a second, this time with spigot
Rob W on Apr 18, 2019
To have a extra fermenter
Michael J on Apr 12, 2019
already have one, works great
Dave on Apr 6, 2019
Need more fermenters, really enjoy the spigot.
Phillip Schmidt on Feb 22, 2019
I already have one and they are just what I like.
Thomas R on Feb 4, 2019
I am going to use as a kombucha brewing vessel - continuous fermentation menthod
Eugene S on Jan 8, 2019
I like the ease of cleaning and light weight.
Frank C on Dec 31, 2018
CATherine c f on Dec 17, 2018
You were out of the 7 gallon ones
dennis wendland on Nov 26, 2018
Light. Large opening. Spigot.
Tom T on Nov 17, 2018
easy dry hopping with large mouth
Eric D on Sep 29, 2018
for wine
Dan H on Sep 21, 2018
Excellent Fermenter. This will be my second one.
Bruce H on Aug 14, 2018
i brew 5 gal batches
dan r on Aug 9, 2018
Secondary Fermenter with no need to siphon
Justin D. K on Jul 19, 2018
I have two of these carboys already. Want a third so I can get two 5 gallon batches going at the same time.
Andrew R on May 10, 2018
Like that it's sides are smooth
Bradley H on Apr 23, 2018
Tired of buckets
Keith m on Apr 11, 2018
secondary fermenter
Adam J. N on Mar 23, 2018
big mouth bubbler alternative
Don R on Feb 15, 2018
Kevin H on Feb 15, 2018
wanted a 2ndary with a spigot
UnBrewsual on Feb 15, 2018
To use as a secondary fermenter
Todd Casey on Feb 1, 2018
lighter, easier to clean, and easier to transfer than with glass carboy
Chris H on Aug 28, 2019
Need a second fermenter and like the first one
Michael F on Jul 15, 2019

4.1 / 5.0
19 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great fermenter for the money. Beginners to advanced brews, this fermenter is all you need.
June 23, 2019
4 months ago
Makes cleanup easy
Better than using a bucket with a spigot because you can see how fermentation is proceeding.
May 19, 2019
1 year ago
Not as great as the glass fermenters but they're light easy to clean and don't break if you accidentally drop them..
March 15, 2019
7 months ago
Don't Like It
I got this as part of a kit. Even though I got the gasket installed easily and properly the lid still leaks. Made out of very thin cheap plastic. I would choose the old conventional bucket over this. I purchased a better fermenter. The FE715 Speidel 7.9 gallon which I am very happy with.
February 2, 2019
Response from MoreFlavor
Hey so sorry about your experience. We try very hard to create the best experience for our customers and provide quality products. Please give us a call at 1-800-600-0033 or email us at info@moreflavor.com so that we can assist you. We are here to help. Cheers!
February 4, 2019
Tyler W Staff
received as scheduled, well packaged. The outer box had one damage (carrier) but the vessel was in perfect shape.
thank you
December 10, 2018
10 months ago
Love them
These are so much easier to clean that the competitor's version with all of the dimples. My first Fermonster was great, but the second, with spigot is even better. The lid removal tool is a must.
Love the Fermonsters. Even more with the spigot.
Love the Fermonsters. Even more with the spigot.
October 21, 2018
1 year ago
I own 6 Fermonsters. They are pretty much the ideal fermentation vessel in my opinion. I use a #10 breathable silicone airlock.

Clear. Ported. Wide mouth. Lightweight. Safe. Compact. Punted. Low oxygen permeability. Can do pressurized transfers. Seal well. Inexpensive. Designed to minimize headspace. What more could you want?
Want to harvest the yeast cake? Swirl and pour.

Warm PBW soak between batches to clean and remove flavors.
October 5, 2018
1 year ago
Amazing device. Only issue is you have to tweak the spigot for a bit so you do not get any leaks.
September 24, 2018
1 year ago
Wall of the fermenter is too thin.
I bought two of these plastic fermenters.

The volume is ideal for a 5 gal brew and the large mouth is great for cleaning.

The plastic is very thin and one of the spigots is very difficult to open and close. It may improve once the parts wear.
September 10, 2018
1 year ago
They were on sale
They are a 6 gallon Carboy. But poorly made. On the side of the container there supposed to be stamped showing a 6 gallon and a 5 gallon level. But were not pressed enough to to show. And the lid gasket is a little too large to fit correctly.
I would suggest they go back to the drawing board and work a lot harder to put out their product.
August 23, 2018
1 year ago
Response from MoreFlavor
Hello Ken - On the product page, we offer a great video explaining these gaskets and their installation. I cannot speak for the volume markers. Please give us a call at 1-800-600-0033 or email us at info@moreflavor.com so that we can assist you. We are here to help. Cheers!
September 7, 2018
Zach R Staff