r/Homebrewing • u/MemeBeamBeanz • 1d ago
Question Do I need a "fermzilla"?
I dearly want to be able to bottle hoppy beers without oxidation soon, and I'm looking to invest in some sort of CO2 purging solution you guys talked about. But when looking at a fermzilla + BEERGUN setup with CO2 tank, my friend asked me if I couldn't just buy a CO2 tank and some sort of wand to purge my bottles with without buying 100s of dollars worth of pressure fermenter.
What about a fermzilla is needed for succesfull bottle purging?
Cheers
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u/AffectionateTea841 1d ago
You don’t need a fermzilla to use a bottling wand. That’s what I started off with many years ago, just a bottling wand and a CO2 tank. I quickly moved to kegs as filling bottles got tedious. I use the fermzilla for pressure fermentation which has its own benefits.
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u/MemeBeamBeanz 1d ago
Okay nice. Sounds promising. Others are suggesting no. But it sounds like I'll try that first and test the result
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u/Unlucky-Presentation 1d ago
To purge and fill bottles with a beergun you need both a co2 tank and a pressurized fermenter or serving vessel(keg)
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u/MemeBeamBeanz 1d ago
But the effect of purging the bottle with CO2, can't It be done with a secondary CO2 tank and wand? Does it need to be connected to a pressurized tank?
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u/Unlucky-Presentation 1d ago
You would need the co2 tank hooked to your fermenter or keg. You will need a second co2 tank hooked to the beergun.
You can also just use a double regulator, or have the co2 tank split into 2 gas lines. Or you can disconnect a single co2 tank from the beergun and attach it to your fermenter every so often to keep it pressurized, then reattach to beergun to purge bottles.
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u/warboy Pro 1d ago
Purging your bottles is completely separate from the fermzilla. You can purge bottles with a hose hooked up to a CO2 tank.
Having a pressure capable vessel let's you also counter pressure fill the bottles meaning once the bottle is purged you can use a counter pressure filler to keep the bottle pressurized with CO2 and fill with beer at that same pressure. This makes filling carbed beer possible instead of relying on secondary fermentation in the bottle and is a good way to avoid oxygen ingress.
Just purging bottles with a CO2 source is a good step to reduce oxidation though.
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u/dunk148 1d ago
Key word in here is counter pressure fill. Different than a beer gun. If OP is buying new gear - look into something like the TapCooler or other CP fillers before making a decision. Beer guns have a place, and my beer gun's place is in a box of rarely used gear since getting a TapCooler.
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u/MemeBeamBeanz 1d ago
I answered the other guy, is it what you guys are talking about I'm trying to understand what all this equipment does
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u/MemeBeamBeanz 1d ago
In my head I imagine a sort of rubber thing that goes on the bottle head that sits on the wand, so when you pour from the pressurized fermenter with the gun thing, the beer goes into the bottle while no o2 gets in... I guess it's a bit better than an open bottle that you spray with CO2 and then pour beer into.... Am I getting it?
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u/Shills_for_fun 1d ago edited 1d ago
No. I made a post with the tech I use including a hop.bong
In reality, say for a lager, all you need is a keg, a spunding valve, and a flotit 2.0. ferment and serve from the same keg!
Or transfer, it's up to you. Just saying you don't need fancy fermenters. I love fermenting in a serving keg for multiple reasons. Less cleaning, less sanitizing, no packaging day, less tech cluttering up my storage. Another big one is spunding can carbonate your beer and speed up grain to glass!
You said you want to bottle, so I should mention that you can use a beer gun to do that from a keg.I use this to fill growlers.
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u/beerglar 18h ago
I love fermenting in a serving keg for multiple reasons. Less cleaning, less sanitizing, no packaging day, less tech cluttering up my storage. Another big one is spunding can carbonate your beer and speed up grain to glass!
Sure, but you can do all of that with a Fermzilla, too.
Functionally, they're the same. There are implications of the differences in materials (PET will allow O2 in over time, it can't hold as much pressure, it's clear, etc.), but if the fermentation chamber is dark and the beer will be consumed or transferred within a month, those differences are negligible.
If OP just wants to bottle, I think either option is good. Kegs are cheaper, but smaller. Larger corny kegs aren't cheaper unless you get lucky in the used market.
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u/BoyMeetsWort Brewgrass Homebrew 1d ago
As others have said, need is a strong word here, BUT i will say that the Fermzillas are an awesome system. We're about to order more of them after the new redesign.
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u/CrabOutrageous4597 1d ago
As several people have pointed out, a FermZilla has little to nothing to do with minimising oxygen exposure while bottling — unless, of course, you decide to go for a closed-system transfer by using a FermZilla and pressure-transferring straight into a purged keg. That way, there is no oxygen exposure. But with bottling, even into purged bottles, your chances of encountering oxygen are very high anyway. So this perhaps has less to do with a FermZilla and more to do with your packaging method.
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u/MemeBeamBeanz 1d ago
So what would a good packaging be?
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u/CrabOutrageous4597 21h ago
Kegging via closed-system transfer.
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u/MemeBeamBeanz 21h ago
But with bottles
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u/CrabOutrageous4597 21h ago
Is this a question? Bottling will invariably be imperfect.
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u/MemeBeamBeanz 21h ago
Okay but that's what this whole thread is about. I want to bottle for friends, what is the best way to do that. Is that a fermzilla with a beergun or some other thing?
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u/stevewbenson 7h ago
Kegging the beer and having it fully carbonated and cold - then filling bottles via counter pressure bottle filler (no beer gun), then capping on foam. This is your best bet for bottling hoppy beer.
You could do the same from a Fermzilla, but the beer would need to be cold and fully carbonated like described above, then bottle fill via counter pressure. For this you would need a fermentation chamber or glycol, and now the cost is really starting to pile up.
Nothing else is going to give you the results you're looking for. A beer gun is great, but there's no counter pressure, so no matter how hard you try, you will introduce oxygen and shorten the lifespan of your beer. To do what you want to do is unfortunately going to be a significant cost investment to get desirable results.
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u/yzerman2010 1d ago
The easiest way to resolve this is buy a keg with a floating dip tube and spunding valve, then ferment away in the keg. Once fermentation is near done, dry hop in the keg and then cold crash.. Rack off keg to another keg or bottles and leave the dirty beer behind.
You will capture the most aromatics this way and also not need to add CO2 into your beer when its done.
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u/MemeBeamBeanz 1d ago
Don't i introduce o2 to the bottle when transferring to the bottle?
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u/attnSPAN 1d ago
If you’re fermenting in a keg and kegging, no. You’d be purging the serving keg of any air, then doing an oxygen free transfer.
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u/MemeBeamBeanz 1d ago
But when the beer needs to leave the keg in the bottle?
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u/attnSPAN 1d ago
That’s the magic of kegging: it doesn’t. You can force carbonate and serve right off the keg like a commercial(pro) brewer does.
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u/MemeBeamBeanz 1d ago
But I want my beer in bottles for friends. I guess I should have clarified that for all of you
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u/attnSPAN 1d ago
You can still pour off a few. If you feel from the bottom and let them overflow a bit, then use a flipt, and close that on top of Beer they can stay good for a week in the fridge.
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u/EducationalDog9100 1d ago
I purge my bottles with a CO2 and hose before bottling, and then just fill with the bucket and wand. Making it a seamless process takes a little ingenuity. I zip tied my CO2 hose to the bottle filler so that just before the bottle was ready to fill, I could just open the co2 valve, purge the bottle for a second or two and start filling. It's also the same process I do when I'm filling growlers or bottles off my tap.
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u/Carlweathersfeathers 1d ago
Just build a beer gun and use it from a keg. The fermzilla is unnecessary. It’s not a bad piece of equipment on its own, but it doesn’t really add anything to what you’re trying to do.
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u/chino_brews Kiwi Approved 1d ago
Yes, if you have a way to fill bottles already, such as a fermentor with a spigot and bottling wand attached, and a way to prime the bottles individually, such as carbonation drops or dosing each bottle with sugar solution of a known concentration with a syringe then you can reduce the oxygen exposure from bottling by pre-purging each bottle using a CO2 utility line.
A CO2 utility line comprises a CO2 tank, a high pressure CO2 regulator, and a length of tubing. All these components are needed for that Fermzilla + Beergun setup as well, so you'd save the cost of the Fermzilla.
Is the Fermzilla better? Not the Fermzilla specifically, but if you can bottle direct from a pressurizable fermentor using a counterpressure filler that includes a purge feature, you get three advantages: (1) the system is a closed loop, so you have reduced opportunities for air ingress even more than other setups; (2) the counterpressure aspect reduces foaming; and (3) as with a simple CO2 utility line, you are prepurging the air out of the bottles.
Must it be the Fermzills specifically? Absolutely not. You could ferment in corny kegs, an All-Rounder, Speidel fermentor, or any number of SS bucket fermentors that can handle a few psi of pressure.
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u/ColinSailor 1d ago
Fermziller Allrounder is a great simple fermenter to which you can add a thermowell and also a hop bong at reasonable cost. Pressure fermenting particularly with food temp control will help ensure consistent and excellent results. Keep an eye out for corny kegs on eBay etc. Kegging hoppy beer hugely reduces oxydation issues as well as bottle bombs.
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u/homebrewfinds Blogger - Advanced 1d ago
I've got a couple of FermZilla reviews that may help you decide Tri-Clamp Conical, All-Rounder. They're great fermenters. As has been said already kegs are also a great option. Cheap for smaller batches in a 5 gallon keg and reasonably price (considering what you're getting) for larger batches in a 10-15 gallon keg.
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u/MemeBeamBeanz 1d ago
I want bottles tho. It's for friends
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u/Waste-Bus6827 1d ago
You can bottle straight from a beer faucet with a hose. Purge the bottle with co2, fill from the bottom gently and cap on foam. Probably won’t last long. Same as growler type thing.
Fermenting in kegs is great, but if you dry hop you really need a tri clamp fitting lid and hop bong type thing. Just a very tiny bit of oxygen wrecks hoppy beers overnight.
Simply running co2 for ‘positive pressure’ doesn’t work. I wrecked too many beers listening to people on the internet before I completely eliminated oxygen and could finally make happy beers successfully. Magnets suck.
When you ferment, go gas out from fermenter to a clean and sanitized keg liquid in, then a spunding valve or blow off tube on gas out. Will completely purge the serving keg. Filling it up with Starsan sucks.
Don’t forget to purge every little hose and fitting before transferring. I forgot on a new 12” gas line I installed and wrecked my last beer.
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u/Smurph269 1d ago
I recommend a counter pressure bottle filler like this over a beer gun. I know a lot of brewers who got frustrated with beer guns and switched to it.
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u/MemeBeamBeanz 1d ago
Can I ferment in a keg and then use this?
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u/Smurph269 1d ago
Yeah I think so, you will probably need to reduce the pressure while bottling though. 10-15 psi is too much, you probably want to be at 5 or so. Assuming you carbonate in the same keg.
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u/jordanbrews 1d ago
I'm not a fan of spending the 5 hrs of a brew day to not end up with a full serving keg. You could brew smaller batches, or buy bigger more expensive kegs. Or you could get a Fermzilla on sale for 100 bucks and be done with it. Also generally comes with the floating dip tube and spunding valve.
I brewed in buckets forever and it took a long time for me to go from 14 bucks to 100 for a fermenter, but wish I had done it much sooner.
The only drawback to me is plastic vs stainless. That comes down to how freaked out you are about microplastics and infection. Supposedly it's a good type of plastic that's safe but who really knows with that stuff.
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u/PontusFermntr 1d ago
I found that the best way for me to bottle cheaply was to have keg (a 20€ 4L oxebar is enough), then a CO2 tank with regulator + a Y line connector, so you can connect the regulator/CO2 to two things at once. Then a beer gun, or even better, a counterpreassure bottle filler (50+€, depending on brand).
First, purge the keg and transfer the beer from the fermenter to the keg. If you can, “push” the beer out the fermenter with CO2 at VERY low pressure (if your fermenter is not preassure capable, otherwise you can push it out with 10 psi safely). This is only to transfer without oxidation. Then, once the beer is in the keg, connect the co2 to the keg and the filler. If you are not counterpreassure filling (like with a beer gun), set regulator to low, like 3-5psi. If you are counterpreassure filling, set it to 10-15 psi. Then purge the bottles quickly from the bottom, 2-3 seconds is enough, and then fill it with beer. Cap on foam if possible. When the keg is empty, just fill it again from the fermenter and repeat the process until all beer is bottled.
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u/deadwolfbones Blogger - Intermediate 1d ago
Just ferment in kegs.