FerMonster Carboy With Spigot - 7 gal.

FerMonster Carboy With Spigot - 7 gal.

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 large 7 gallon size was designed to provide ample space for fermentation and you'll find the molded in volume markers super handy for accurate filling. 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.  The 7 gallon volume is a monster of a fermenter, reducing blowoff issues seen with standard 5 and 6 gallon carboys. 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 includes 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, 6, and 7 Gallons
  • Punted bottom
  • 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: 20.9 inches
  • Diameter: 11.3 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 # FE257
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 2 LBS
Community Q&A

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Browse 4 questions Browse 4 questions and 17 answers
Why did you choose this?
MoreFlavor Store
need more fermentation - good quality
Jason B on Mar 2, 2023
To do 5 gallon mashes with plenty head room
chad r on Feb 11, 2023
need more fermentation - good quality
Jason B on Mar 2, 2023
extra capacity to avoid blow off
Steve G on Feb 23, 2023
To do 5 gallon mashes with plenty head room
chad r on Feb 11, 2023
A friend's recommendation
Scott Brubaker on Feb 3, 2023
This is my second Fermonster. The other has lasted me 5 years but it was time to replace it.
David P on Feb 2, 2023
These are easy to clean and handle explosions really well due to the shape.
Tom B on Oct 29, 2022
Wanted to replace glass carboy
Jonathan F on Sep 14, 2022
Recommended by another shopper
Rebecca M on Aug 1, 2022
recommended by friend
Brandon K on Jul 30, 2022
best deal for my first fermentor
lucus a on Jul 13, 2022
try it out
Mark Maxfield on Jul 7, 2022
Because it has a locking lid, which I hope is better than my current big mouth bubbler
Eric C on Jun 21, 2022
I have 2 already and love them, they are easy to use and clean.
DAVID R J on Jun 13, 2022
Because I need it
James Y on Mar 18, 2022
Low cost for an experimental brewing
lawrence a b on Mar 10, 2022
Easy to clean, light, has a spigot.
Stacy M on Mar 8, 2022
Because I need a new one to replace my old one.
Mike C on Feb 23, 2022
lowest price
Scott S on Feb 10, 2022
I need a new bottling bucket.
Jesse W on Feb 8, 2022
matthew l on Feb 4, 2022
Will fit in my fermentation chamber
Daniel D on Feb 2, 2022
need a spare
richard r on Dec 20, 2021
can you have too many?
Tony on Dec 18, 2021
Plastic with big mouth and spigot
Scott on Dec 9, 2021
Easy bottler!
Steven H on Nov 11, 2021
Ive on Nov 9, 2021
Because of the spigot
David S on Oct 21, 2021
Will be using as a secondary fermentation; easier to transfer product
Patricia M on Oct 19, 2021
For brewing beer
Gary K on Sep 18, 2021
I love my 7-gal FerMonster! I'm adding a 2nd with the spigot for zero-O2 gravity samples.
Rick M on Aug 24, 2021
Like to watch it work
Dan on Aug 6, 2021
I have two and like them, need another.
Daniel Tate on Aug 3, 2021
Need moar fermenters and prefer the monsters, though the opening could be a little larger for reaching the bottom. Good price on larger spigotted size.
Adrian O on Jul 23, 2021
I hope it fits in my fermentor
Elliott T on Jul 23, 2021
already have one of these but really wanted one with a spigot
Kyle T on Jul 21, 2021
Upgrading to larger batches and 3 gallon fermonsters have worked well for me
Justin M on Jul 10, 2021
Good size for fermentation
Hector T on Jul 3, 2021
Thought I would try this as a replacement for my glass carboy
Edward C on Jun 24, 2021
I like the extra head space for 5.5 gallon batches
Christopher B on Jun 19, 2021
Tired of glass
Rob Gowen on Jun 10, 2021
Highly recommended by fellow brewer.
Paul W on Jun 9, 2021
Easy to clean
Clint O on Jun 2, 2021
I like the convenience of being able to clean easily
Frank G on May 27, 2021
I have one already and love it!
Edier I D on Apr 28, 2021
looks like it will work better than five gallon buckets with spigots.
charles s on Apr 26, 2021
Accidentally scratched my existing Fermonsters, replacing and making getting 7g for more headspace to reduce my blowoff risk.
Damien P on Apr 26, 2021
FRANK M on Apr 22, 2021
Easy cleaning and no siphoning
Melanie F on Apr 19, 2021
Quality carboy, reasonable price, spigot is invaluable.
Rocky S on Apr 15, 2021
extra capacity to avoid blow off
Steve G on Feb 23, 2023
A friend's recommendation
Scott Brubaker on Feb 3, 2023
What size tubing will fit the spigot?
Ray Pirc on Jul 11, 2018
BEST ANSWER: 3/8 OD tubing works for the spigot.
Has anyone had to use a blow off tube and if so what OD?
Michael Cundiff on Feb 25, 2018
BEST ANSWER: Hi Michael,
I've had this fermenter for over a year fermenting 5.5 and 6 gal batches. With aggressive yeast I'll attach a blow off tube. Simply insert a 1/2 OD tube into the size #10 stopper that is a recommended purchase from Morebeer. It creates an airtight fi!
Does the washer on the spigot work best inside or outside the carboy?
DieselDad on Dec 9, 2020
BEST ANSWER: I've always used it on the inside and that seems to work best. The washer squeezes against the nut and the walls of the fermenter to stop contact between the beer and anything on the outside of the fermenter. This makes the most sense to me because the outside of the fermenter is likely to be contaminated fairly quickly.
Has anyone already measured out the heights/distances for each gallon mark? I would like to place a vertical piece of tape with each gallon marked off. Thank you.
Robb Denney on Aug 15, 2021
BEST ANSWER: The gallon markers are stamped into the sides.

4.3 / 5.0
104 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 4 out of 5
Many advantages over glass carboys but misshaped?
10 gal primaries (heavy 6.6 gal glass carboy & a 6 gal bucket) get carried down a steep flight of basement stairs. The bucket is scratched & no longer airtight so I replaced it with a 7 gal Fermonster w/ spigot & carrier. Excited when it arrived but noticed a 4" wide 1" deep depression along the length of 1 of the side seams. It temporarily pushes out with a little pressure.
Worked really great on 1st batch but wonder if it is defective. Anyone else noticed this?
August 17, 2023
Rated 5 out of 5
Easy to use, easy to clean! I love this fermenter. I have 1 x 7 gallon and 1x 6 gallon for secondary. I need more!
July 17, 2023
1 year ago
Rated 3 out of 5
Works as it should, not perfect but good for the price
I would give a 4 or 5 star but for a couple issues.
The spigot leaks a tiny bit around the weldless compression fitting. I tightened it a lot but still seems to leak. only a few drops during ferment. Ill take it off and clean and see if I can get it to seal better.
The lid gasket doesn't stay in its groove in the lid. annoying when it falls out when you take the lid off. Its also a very thin gasket. Seals though.
Spigot placement could also be 1/2" lower. I had about 1" of beer left on top of the settled yeast cake. Tipping the fermenter worked to get most of it, not all, but it did cause the settled material to stir up a bit.
It could be thicker but strong enough.
Love that it is clear.
Love that there are accessories available at reasonable prices.
Overall, I like it and would get another.
March 9, 2023
1 year ago
Rated 1 out of 5
I would recommend against this product
Based on the size of the opening at the top and the long shape, it is impossible for most people to put the gasket on the inside of the fermenter. You need a tool to add the back piece but it doesnt work for the gasket. The opening is for the spigot is a bit larger than it needs to be so it will allow for leakage despite the outside gasket. Unfortunately, it is too late for me to return it but really wish I could. Save yourself a headache and the the 7.9 gallon Speidel and avoid this one.
February 2, 2023
1 year ago
Rated 5 out of 5
Fermonster carboy
Never had a plastic fermenter before. Works great easy to clean serves the purpose nicely
October 21, 2022
1 year ago
Rated 5 out of 5
Better than a bucket
October 6, 2022
1 year ago
Rated 5 out of 5
Using the spigot
At the end of every brew there are dreggs in the bottom of the carboy. The spigot allows you to runoff the product without disturbing the dreggs. Cause even the sifon tools allows dreggs to get in your bottling.
September 15, 2022
over 3 years ago
Rated 5 out of 5
Excellent fermenter
The fermentation went well with no leaks or blow over. The transfer to the keg was also straightforward with the spigot. I used an inline strainer, but that was hardly necessary with this brew since the spigot was above the trub. Cleaning the lightweight FerMonster was especially easy with the large mouth, and everything rinsed off easily from the smooth sides. I would definitely recommend this product.
August 23, 2022
1 year ago
Rated 3 out of 5
Kind of flimsy?
The plastic on this is a bit thin, which makes it light weight but also makes it a bit flimsy. I was worried that I was going to crack it when I screwed in the spigot. It's also difficult to read the gallon markers. I would also prefer a smaller hole for the airlock. On the plus side, I think the raised part on the bottom will make transfer to secondary nice and clean.
April 3, 2022
over 2 years ago
Rated 5 out of 5
Was what I anticipated
February 24, 2022
over 2 years ago