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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 - Out Of Stock
Pennsylvania - In Stock
Weight 40LBS
Community Q&A

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Why did you choose this?
MoreFlavor Store
Louis M on Aug 10, 2018
Good reviews
Jeff W on Aug 9, 2018
Louis M on Aug 10, 2018
Least expensive means to pressure ferment.
Royal D M on Aug 10, 2018
Good reviews
Jeff W on Aug 9, 2018
This is my third one.
Jeffrey Palmer on Aug 3, 2018
Trying out a new fermenter, to replace one of my bucket.
Scott J on Aug 2, 2018
Bought for friends as a gift since I already own one and really like it
Brent E on Jul 25, 2018
Highly Recommended
Antoine R on Jul 24, 2018
Overall reviews and I watched thei videos
Joseph K on Jul 14, 2018
Reviews and price
Greg D on Jul 10, 2018
Like the design, and ability to ferment under pressure. Related YouTube videos convinced me that this would be perfect for my setup.
Russell J on Jun 28, 2018
Unitank w/ pressure kit - space savings
Justin S on Jun 26, 2018
Price and size
ivy s on Jun 26, 2018
looks like an awesome product + good reviews
Tom p on Jun 8, 2018
need a large conical ferm that is easy to use and pull yeast/trub sediment
Austin R W on Jun 6, 2018
wanted a simpler fermentor to keg/bottle under pressure without spending 1000's
Howard K on May 23, 2018
Great reviews.
Eric W on May 22, 2018
It’s larger than the FastFerment and coming
Scott N on May 22, 2018
have purchased from you in the past reliable and fair prices
Leigh D on May 16, 2018
To make brewing more convenient / less time consuming
Joshua J T on May 15, 2018
because we can brew 7 gal batches
Dallas C on May 15, 2018
For pressurized fermentation
Brian S on May 10, 2018
Good reviews at a goodnprice
Steve Y on May 9, 2018
Good past experience with it
Jeffrey C on May 8, 2018
Best conical fermenter for the price, can easily buy 10 of these for price of 1 stainless 1/2 BBL conical
Ryan B on May 5, 2018
For husband's birthday. Upgrade over bucket and secondary fermenter.
Connie S S on May 3, 2018
Price and quality of the product
Ron B on Apr 30, 2018
Looked interesting.
Mitchel T on Apr 30, 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 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
Least expensive means to pressure ferment.
Royal D M on Aug 10, 2018
This is my third one.
Jeffrey Palmer on Aug 3, 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
44 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
I bought a 2nd as a gift
I preordered mine when they first became available. I have fermented too many times to count and always happy. Five stars of course but several times I did not tighten the tank to valve connection and had to tighten to stop drips. Not a problem, since once tight enough the leak stops. I now tighten another 1/8 turn beyond what I believe is tight and problem seems resolved.
Good size, easy to clean, pitching and removing yeast in the conical bottle make this superior to carboy bottles or buckets. A good step up for me after 30 years using carboys.
August 7, 2018
3 weeks ago
So happy with my purchase!
I got this with the pressure kit and a spunding valve, I set it around 8 PSI for all my brews. 6 brews and I haven’t had a bad batch, not having to transfer (reduced chance of bacteria and O2) and can move directly to a keg (reduced chance of bacteria and O2) the beer is sterile and never touches oxygen once I pitch the yeast.

It’s easy to clean (even after sitting for a few weeks after kegging)

My suggestion is just BUY IT!
August 1, 2018
7 months ago
Response from MoreFlavor
They really are novel little fermenters.
August 7, 2018
Zach R Staff
First brew in fermentasaurus
Great conical for the price. It is nice to be able to view fermentation. Only gave 4stars because the airlock wouldn’t seal. I realized the airlock hole is used for the pressure relief valve on the pressure kit and there is not a gasket to seal it. Did a hack on the lid to add a thermowell and an elbow for a blowoff tube.
User submitted image
User submitted image
July 28, 2018
1 month ago
Awesome and cheap compared to other options, buy it!
July 21, 2018
2 months ago
Save your money if you can- get a stainless!
I was disappointed in this. The plastic is thin- you can easily "crinkle" the plastic inwards with negative pressure. Also- if you fill it and plan on moving afterward- be very careful! It is very awkward to carry this thing with 5 gallons in it!

I would say it does MORE than the the other plastic fermentors out there (like, pressurized options the being the biggest) but after $120 for this, and $60 for the pressure, kit, you are almost halfway there to a real stainless!

I returned mine- HUGE kudos to MoreBeer's AWESOME customer service! It makes me feel confident buying knowing that these guys & gals stand behind their service and products. Added an extra star for that.
July 21, 2018
1 month ago
lower adapter dissassembly advice
LOVE the fermenter. Bought a second one.
Adivice to those taking the lower assembly apart.
get a strap wrench and part number 1000012510 from home depot. (internal pipe wrench set, 3pc.) The largest handle fits into the hex opening of the adapter perfectly. Much easier to take apart. Rememeber it is left hand threaded. Don't forget to put some keg lube very lightly on the washer and O-rings during ressembly.
Happy Fermentations!
July 8, 2018
2 months ago
Best fermenter ever!
Awesome! First day removed trub, after a week Removed a bottle of yeast. Later removed another bottle and a half of yeast. Pitched the yeast directly into another batch and had active fermentation in a few hours. After first batch finished fermenting, transfered into a keg, super easy, cleaner than any batch I have ever made. This thing is great.
July 6, 2018
1 month ago
Great product!
I bought this primarily to ferment under pressure and it is great for that, but it is also great in general. I have a Fast Ferment as well and this is a far superior product. The only thing I would change is a larger butterfly valve. I have some trub hanging up in the conical and not falling into the bottle.
Would buy it again in a heart beat. Highly recommended.
June 6, 2018
3 months ago
Looks like good inexpensive fermenter
I have mead fermenting in it right now. The unit appears well made for the price. Only negative is the stand, really cheap. They should offer an upgraded stand. Would be willing to pay more for it. This fermenter is really good for mead as mead ties up a fermenter for a long time. Will have to see how the mead turns out to fully eval this.
June 5, 2018
3 months ago
It’s great very easy to use clean and store
June 4, 2018
2 months ago