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Fermonster 6 Gallon Widemouth Carboy Fermentor (w/ spigot)

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The Fermonster 6 gallon fermentor is a clear PET carboy with 5 and 6 gallon markings for easy to read convenience. It features a 4'' wide mouth opening and rib-less walls to make transfers, additions and cleaning quick and easy. It's light weight and durable design help with transportation and batch loss due to carboy drops. This fermenter goes the distance by including a spigot so you can rack straight from the carboy without a siphon. The carboy features a punted base for yeast and other sediment to collect on the sides of the bottom so you can siphon the beer/wine from the center. Too small? Check out our 7 gallon Fermonster product.

Like Glass, PET Plastic won't let through any oxygen spoiling your batch. It's colorless, odorless, and stain resistant. The only negative to using PET is the fact that it can scratch, and scratches can be places bacteria will hide out in. But a little care when cleaning will prevent scratching and keep you and your carboy happy.

Use carboy stopper size #10

General Info

  • PET Plastic
  • Taste/Odor Free
  • Stain Resistant
  • Impermeable to Oxygen
  • Rated to 140 degrees F
  • Use carboy stopper size #10
  • Height: 19.25 inches
  • Diameter: 11.25 inches
  • Easy to Clean!

WARNING: This product can expose you to Vinyl Chloride, which is known to the State of California to cause cancer. For more information go to:

2 Reviews

  • 4
    I'm glad to have this

    Posted by Alyssa R. on May 21st 2019

    I ordered the Fermonster when my old fermentation bucket was getting a little too funky. I like the durable plastic and wide mouth. I wouldn't order one with a spigot again, though. It feels a bit loose and it makes me nervous. Nevertheless, I've got a NEIPA brewing in it and no leaks.

  • 4
    Good Plastic Fermentation bottle

    Posted by jason b. on Apr 3rd 2017

    While still plastic and subject to scratches (don't use this for both your sour and your ale beers) It holds up well. The spout works fine, just don't put a ton of weight or abuse on it, it's also just plastic.

    I deducted 1 star for there being no great way to pick these up. There is no handle, and the lip under the lid is thin. Could use a lid-lip handle or some such.

    Other than that it works great as a primary fermenter, the spout is very useful, and unless you have a LOT of sediment from whatever you put into your beer, the spout is most of the time high enough to get just beer and none of the cake at the bottom.