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Fermentasaurus Conical Fermenter - 9.25 gal. / 35 L
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The Fermentasaurus is a unique, game changing plastic conical fermenter for homebrewing. It is the perfect choice if you want to see your fermentation, dump trub, collect yeast, and even carbonate all in one vessel without any transfers or siphons.  Made from clear PET the Fermentasauras offers the classic benefits of a conical shape without the cost of stainless. It will drastically cut down on oxidation by removing any need to rack your beer to a secondary vessel. And perhaps most amazingly it can be pressurized like a keg with the addition of the optional Fermentasaurus pressure kit

The Fermentasaurus fermenter has a large 35L (9.25 gallons) size that makes it easy to ferment 5 gallon batches. The standard lid has a built in stopper and comes with an airlock. There is a butterfly dump valve at the base of the cone with a 500 ml harvesting container. This makes it very simple to remove the yeast at the bottom of your fermenter without exposing your beer to oxygen. The handy harvesting container also allows you to store the yeast to use on your next batch! The dump valve has been designed so that no threads are immersed in liquid making it easy to clean. Other fermenters will use ball valves that are very difficult to clean without completely disassembling them.

The Fermentasaurus is produced in Australia after four years of R&D. This fermenter is the world's first conical PET fermenter that is pressurizable up to 2.4 Bar (34.8 psi) letting you go from fermenting to serving without having to transfer to another vessel. You also have the option of fermenting under pressure which reduces esters and fusel alcohols allowing you to ferment warmer than you normally would. If you do choose to transfer your beer you can do it under pressure straight into a keg or other vessel with little to no oxygen exposure. 


  • 9.25G/35L total volume
  • Clear and easy to see through
  • Screw top lid with airlock
  • Butterfly dump valve 
  • 500 ml collection ball below dump valve
  • 304 stainless steel frame with carrying handles
  • Volume marker sticker down side of tank
  • Stick on liquid crystal thermometer
  • Includes barb for bottle filling from bottom dump that accommodates 3/8" or 1/2" tubing
  • Temperature rated from 32-131°F (0-55°C)
  • Rated for 2.4 Bar (34.8 psi) working pressure when used with optional pressure kit (Do not pressurize the Fermentasaurus without the pressure kit, FE101)


  • Total height with airlock - 37.6 in.
  • Total diameter - 14.9 in.
  • Tank height - 27.1 in.
  • Tank diameter - 13.5 in.
  • Top opening diameter - 3.25 in.
Item # FE100
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 8LBS
Community Q&A

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Why did you choose this?
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Good reviews
Raymond G on Apr 21, 2018
Online reviews
Jason M on Apr 20, 2018
Good reviews
Raymond G on Apr 21, 2018
upgrade from carboys
Tim B on Apr 20, 2018
Online reviews
Jason M on Apr 20, 2018
I was looking to try a conical fermenter that didn't cost a fortune
Henry S on Apr 20, 2018
looks like a great product I can't wait to try it out
Robert R on Apr 18, 2018
streamlined secondary , kegging and bottling process
craig v on Apr 18, 2018
Overall value. I'm not quite ready to splurge on a stainless unitank , yet the Fermentasaurus will allow me to pressurize my beer by force. I'm also hoping the create a carb stone attachment for this device.
Michael F on Apr 16, 2018
Looks awesome! Great reviews, solves a lot of homebrewing issues.
Jason A on Apr 12, 2018
Timothy D on Apr 11, 2018
Starting brew, needed see thru fermenter
Pavel K on Apr 10, 2018
Great reviews and the 9.25g size.
Jon B on Apr 9, 2018
do the process in one fermenter- no transfering
LeRoy N on Apr 4, 2018
Saw a youtube video by short circuit brewing
Thomas V on Mar 31, 2018
To enhance my brewing experience!
Mark K on Mar 27, 2018
to up my brewing game
David J V a on Mar 23, 2018
Because I could carbonate and ferment in same vessel
Megan P on Mar 20, 2018
Seems like a good concept and has decent reviews
Michael J. D on Mar 20, 2018
Making mead!
Douglas D on Mar 20, 2018
Cuz it's good
Bradley H on Mar 16, 2018
Rcommended and can unitank
Andy M on Mar 16, 2018
To ferment beer under pressure
Jeremy E on Mar 16, 2018
Seeing a lot of home brewers using this and want to ferment under pressure in an way that won't break the bank.
Janett M on Mar 16, 2018
Would like to add a conical fermenter and I thought this would be the best choice
Thomas E on Mar 3, 2018
It is a unitank, It'll drop the time between brew day and drinking our finished product
William L on Feb 28, 2018
Needed for robobrew
Alex L on Feb 27, 2018
The reviews are consistently very positive. Needed any entry level conical until I can afford a stainless model.
Jerald K on Feb 21, 2018
Wanted a conical at a good price.
Charles B on Feb 19, 2018
Unlike anything else I could find. Good size and it's clear.
Tyler T on Feb 19, 2018
Wanted a conical
Jeffrey B on Feb 15, 2018
Sanitized , Save time
Mauricio G on Feb 7, 2018
Trying to make a cyser and keep having to rack it off the lees. It's expensive (the honey and apple juice are comparable in price to this fermenter!) and I need a fermenter I can commit to the cyser for 8 months or more...
James B on Feb 6, 2018
Auto carb beer during fermentation
William G on Feb 5, 2018
This is my third one.
Jeffrey Palmer on Feb 5, 2018
Can get rid of trub easier, less chance o f contamination
Jake W on Jan 25, 2018
Liked the idea of fermenting under pressure
Edie B on Jan 24, 2018
So I don't have to transfer wort more than once.
Kenneth S on Jan 19, 2018
Price and description
Paul W on Jan 18, 2018
upgrade from carboys
Tim B on Apr 20, 2018
I was looking to try a conical fermenter that didn't cost a fortune
Henry S on Apr 20, 2018
Can I use PBW to clean the fermentasaurus?
Matthew on Jan 13, 2018
BEST ANSWER: Yes, I’ve been using it to clean my fermentasouraus. There is no need to let it soak over night though because you are able to fit your arm and and in to gently rub the gunk off.
any video or instructions on cleaning the fermentasaurus especially the butterfly valve after use?
Frank Hruby on Mar 30, 2018

4.6 / 5.0
27 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
ideal set up
I have done brewing in buckets, and this is by far a better set up.
April 18, 2018
2 weeks ago
One of the best investments I have made for my brewing process.
April 17, 2018
2 months ago
This makes removing sediment from the beer a snap!
April 10, 2018
3 weeks ago
Moving up!
This is the perfect stepping stone for Brewers and mead makers wanting to up their game! Small footprint but big value!
April 5, 2018
1 month ago
Great Conitcal Fermenter
My first fementation is still in progress. I love the whole concept and flexibility of this fermenter. I plan on purchasing the pressure kit so i can expand my options.
April 2, 2018
1 month ago
Great conical fermenter
Love the ability to dump the trub and collect yeast all while carbonating the beer!

I'm gonna get another and relegate my spiedel fermenters to the closet.

User submitted image
User submitted image
March 21, 2018
works great
I got this as a Christmas gift. I brewed Pompous Ass ale and fermented it in a Fermentasaurus conical. The beer is very good. It was easier to open after fermentation than a b bucket, easier to bottle than bucket, easier to harvest yeast than a bucket, and easier to clean than a bucket. it is as advertised.
March 9, 2018
Fermenting under pressure it’s only my second batch in, first one was an IPA and love how easy it was to do the dry hop additions and transfer to keg under pressure
South Florida weather, I use frozen 2litter botlles to maintain temp at 68°
Blonde stout in the works
March 1, 2018
2 months ago
awesome fermenter
finishing up first batch. no leaks to report. well made product. solid fiberglass/nylon fittings. dumping collection ball easy. love being able to see what is going on in fermenter. very happy with product .
February 21, 2018
3 months ago
Makes brewing much easier
I love not having to rack the beer. Less chance to cause an issue. It's strong plastic makes it much lighter then glass carboys. Plus with the extra head space, I have yet to have a blow over.
February 11, 2018
3 months ago