be_ixf;ym_202002 d_18; ct_100
FermZilla Flat Bottom Fermenter - 7.9 gal. / 30 L

FermZilla Flat Bottom Fermenter - 7.9 gal. / 30 L

In Stock
Delivers to ( change ) by as part of our Fast & Free Shipping.
Faster Shipping Available. Details.
60 day no hassle return policy. Details

The FermZilla Flat Bottom Fermenter is an excellent option for making all kinds of beverages, from beer and wine to kombucha and cold brew coffee. It's compact, lightweight, and made of brilliantly smooth PET. The extra-large lid opening makes it easy to get your arm inside and scrub the walls clean after use. The Flat Bottom features the same lid as the Conical FermZilla's, so installing accessories like a thermowell or Temp Twister Cooling Coil couldn't be easier.

Why MoreBeer! loves the Flat Bottom FermZilla:

  • Super smooth PET makes cleaning very easy.
  • Tight-sealing lid and PET material make for a better oxygen barrier than fermenters made of HDPE.
  • Lightweight and easy to move around, yet strong enough to be considered shatterproof.
  • The 4.75" lid opening makes it easy to get your arm inside and clean after use.
  • The lid is designed for the easy installation of accessories such as a thermowell or cooling coil.
  • Affordable! The Flat Bottom is one of the most affordable plastic fermenters in this size range.

What's Included:

  • FermZilla 30L Flat Bottom Fermenter
  • 3-Piece Airlock
  • Adhesive Thermometer
  • Adhesive Voume Marker


  • 30 L (7.9 gal) Total Volume
  • Temperature Rated to 122°F
  • Height - 18.5"
  • Height w/ Airlock - 22.5"
  • Tank Diameter - 13.75"
  • Lid Ports - 28 mm PCO 1881 threads


Please note: The Flat Bottom is not pressure rated and was not designed to carbonate in. For this reason, the lid does not come with a PRV like that which is included with the Conical FermZilla. The tank can withstand approximately 2 psi, but beyond that there is risk of deforming and damaging the tank.

California Recipients: WARNING: Cancer and Reproductive Harm -
Item # FE145
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 4 LBS

Community Q&A

Start typing your question and we'll check if it was already asked and answered. Learn More
No questions have been asked about this item. Be the first!
Why did you choose this?
MoreFlavor Store
Fits perfectly inside my temp controlled refrigerator.
Andrew Obeso on Jan 22, 2020
Fits perfectly inside my temp controlled refrigerator.
Andrew Obeso on Jan 22, 2020

3.0 / 5.0
1 Review
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Decent fermenter
I jut finished my first batch in this fermenter. I brewed a standard 5 gallon batch and I've only used fermentation buckets to this point. My first issue was that my fine mesh strainer did not fit the opening like it does my bucket so I wasn't able to strain my wort like I normally do to remove hop particles. This was a minor inconvenience and I already have a work around for my next batch. My next problem was from the lack of a handle. I had to pretty much bear hug this thing, full of wort, and carry it through my kitchen, down steps, and through my basement to get to my storage area. I see that they make a handle but come on, the cheapest fermentation solution is a 5 gallon bucket that comes standard with a handle!!! Can you imagine if you had to pay extra for a handle on a bucket. Plus I have young children so we have gates everywhere. With a bucket and handle I can still open gates. With this thing I had to "clear a path" and then come back through and close gates. The last issue I had was when I went to check my FG. I do the shortcut method of dropping my sanitized hydrometer in to the fermenter. This thing wasn't deep enough to do that. The hydrometer bottomed out.

Now for what I did like. It was great to finally be able to watch my beer through the fermentation process. I did slide an old T-shirt over it to block light when I wasn't checking it. The lid opened easily when it was time to rack it, unlike the finger ripping that is required to pull the lid from a bucket. The lid has some future expansion built in so I can move my temperature probe to a thermowell when I'm ready. Cleanup was a breeze. The curved shape of the bottom made it easy to spray out the trub. A quick soak in my basement laundry sink and it was clean. It actually seemed to fit in the sink for cleaning better than my bucket.

I won't be pitching my fermentation bucket anytime soon, but I will be using this for my next few batches so I can keep an eye on things.
February 3, 2020
1 month ago