Showing posts with label krausen. Show all posts
Showing posts with label krausen. Show all posts

How to set up a 'blow off' hose to prevent an 'attack of the KRAUSEN!'

Monday, January 9, 2023

There's not much worse in terms of mess and clean up than going to check on your fermentation drum and discovering its contents have some how forced their way out the top of the airlock and all over the walls and even the ceiling. 

This can happen because you've managed to set conditions that the fermentation process was quite vigorous and the 'Krausen' was forced out the airlock (remember your drum lid is probably screwed on really tight so the airlock is the only place for it to go). 

A "blow off" hose is a simple but effective way to prevent an "attack of the Krausen" when brewing beer. 

To set up a blow off hose, you will need the following equipment:
  • A fermenter: The fermenter is where the beer is fermented and where the Krausen will form.
  • A blow off hose is basically tubing that is flexible and food-grade (source some from Amazon).
  • A bucket or container is used to catch the overflow of Krausen from the blow off hose.
set up blow off hose


To set up the blow off hose, follow these steps:
  1. Attach the blow off hose to the fermenter: Insert the end of the blow off hose into the fermenter, making sure that it is securely attached.
  2. Place the other end of the hose in a bucket or container: Place the other end of the hose in a bucket or container, making sure that the container is large enough to catch any overflow.
  3. Fill the bucket or container with a sanitizing solution, such as Star San or chlorine, to prevent contamination.
  4. Start fermentation: Once the blow off hose is set up, start the fermentation process as usual. The Krausen will form on top of the beer, and any overflow will be diverted into the bucket or container through the blow off hose.
how to stop a krausen explosion


Once the Krausen even is over, you can swap the blow off house for a bubble airlock if you wish.

Best tubing for beer lines

Tuesday, August 2, 2022
There are many kinds of tubes in the world.
 
London's Tube.

'The Tube'.

A water tube.

Tuberculosis.

Youtube.

Nasogastric tubes.

Most of those have their place in the world but when making beer, the only tube that matters is beer line tubing.

And if you want your beer to be the best beer it can be, then having quality tubing for your beer lines is just as important as sanitization, good hops, and great brewing practices.

beer line tubing for transfering beer

Why you should consider using beer tubes!


Have you ever transferred beer?

Did you ever try and pour a massive load of wort into a secondary?

Did you ever spill it?

Get burned by the hot water?

Have you ever siphoned beer?

Ever cooled a beer wort?

Every time you buy a piece of brewing equipment that uses tubing you are making a call about your beer. Different tubing does different jobs so bear in mind, a single piece of tubing is not the 'one tube to bind them all'.

What's the deal with vinyl tubing for brewing? 


Vinyl tubing is cheap, widely available and excellent for transferring beer from a keg via a jockey box.

It is not suited for high temperatures so it arguably shouldn't be used for transferring hot wort for example.


Some pundits believe that hot tubing can leach into beer, tainting the beer's flavor, or worse adding harmful chemical residue to the beer. I'd take that with a grain of salt but certainly, hot water or wort can damage your tubing so we say use vinyl for transferring beer.

Many beer lines come with screw clamps already attached that will connect to your faucet. You can also get reinforced lining for your tubes - it makes the hose stiffer and more difficult to use, but that might be just what you need.

best tubing for beer lines home brew kegging systems



What is the best silicon tubing for transferring hot wort? 

silicon beer wort transfer lines
Using silicone tubing to transfer hot wort is hands down your best option because it will not melt or change shape as standard vinyl tubing can do. It is also non-toxic.

When transferring wort or a hot sparge, you should always consider using a tube that has been rated for high temperatures like silicone.

Silicone can handle temperatures up to 500 degrees Fahrenheit which makes it quite ideal for transferring hot liquids.

This is the reason why silicon bakeware is so popular - it's light, easy to clean and can withstand the heat pressures of your home oven.

If you do not want to use silicone, then any tubing that's manufactured as 'thermoplastic' will also do the job.

Vinyl tubing that is used with hot water has the potential to leach from itself into your beer, possibly tainting it.

Silicon will not curl up like vinyl hosing can.

What is the best tubing to connect to a wort chiller?

Wort chillers are great for reducing the temperature of the hot beer wort quickly and efficiently so you can get on with pitching the yeast so you can get your beer fermenting.

Most wort chillers will connect the copper or steel end to standard vinyl tubing which then has an attachment that connects to the water supply, often a faucet.

What should I use for 'blow off' tubing?


If your wort has a tendency to expand into a messy foam out the top of your carboy (beware the krausen!) then you may want to use a blowoff tube in place of the standard carboy airlock.

The tubing can then release the foam into a bottle, bucket or whatever to contain the krausen.

We suggest if you have brewing conditions where this has happened more than once, you may wish to consider grabbing some tubing from Amazon!

You can use whatever kind of tubing you want but be sure to get a suitable thick pipe, nothing too narrow as that will work against you as the krausen will not be able to blow out tubing. Some users prefer to use steel tubing.

Taking care of your tube lines (gotta keep 'em clean)

Your beer lines will naturally over time become filthy due to beer residue, yeast and goodness knows what else finds its way into the tubes. 

Crucially, a build-up of calcium oxalate can occur - 'beer stone' as it is known can be a real pain to remove. In fact, if you get beer stone in your lines, we'd recommend you best simply replace them.

If that occurs your beer could become tainted as it flows through, ruining the drinking experience. 

So keep your lines clean!

How do you do this?

If you are a simple homebrewer, a handy solution is to soak your beer lines in a cleaning solution. And for this, we recommend our go-to product, sodium percarbonate. It's cheap, breaks down in the water and won't leave a bad taste residue. 

Once you have soaked your tubes in a bucket for say an hour, drain the cleaning solution and then rinse with fresh water. Re-attach your tubing and you are good to pour your delicious beer!

Other ideas about tubes to ponder...

Exploring Material Choices: Beyond Vinyl and Silicone

While vinyl and silicone are two of the most common materials used in beer line tubing, there are other options available that each come with their own sets of pros and cons. Polyethylene tubing, for instance, offers a balance between flexibility and rigidity, making it a suitable choice for various applications in the brewing process. There's also thermoplastic elastomer (TPE) tubing, which combines the properties of rubber and plastic for a highly durable yet flexible solution.

The choice of material often depends on its compatibility with the beer, pressure requirements, and temperature stability. It's essential to match the tubing material to your specific brewing needs to ensure optimum performance.

Color-Coded Tubing for Streamlined Brewing Operations

For those who are delving into more complex brewing setups or managing multiple beer types, color-coded tubing can be a valuable addition to your toolkit. Utilizing different colors for different beer types or stages of the brewing process can eliminate confusion and reduce the risk of cross-contamination. Imagine trying to operate a brewery or even a complicated homebrew setup without a clear indication of what each tube is doing; color-coded tubing offers a simple yet effective solution to this challenge.
The Impact of Tube Diameter on Brewing Efficiency

It's not just the material of the tubing that matters; the diameter also plays a critical role in your brewing process. A tube with a smaller diameter may restrict flow, affecting the quality and speed of your operations. On the other hand, a tube with a larger diameter might not provide enough resistance, which could affect the quality of the final product. The trick is to find a balance between the two, and that sweet spot can be elusive.

Innovations in Beer Line Technology: Self-Cleaning Systems

Cutting-edge advancements in brewing technology have led to the introduction of self-cleaning beer line systems. These setups include built-in cleaning mechanisms that circulate cleaning solutions through the tubes at designated intervals. While these are mainly seen in industrial brewing settings, scaled-down versions are beginning to appear for the homebrew market. They provide a convenient alternative to manual cleaning, although they come with a higher initial cost.

Extending the Lifespan of Your Tubing: Maintenance Best Practices

Even the best tubing won't last forever, but with proper care and maintenance, you can significantly extend its lifespan. This involves more than just keeping them clean; it also means regularly inspecting your tubing for signs of wear and tear, such as cracks or deformities. 

If you spot these early, you can replace the tubing before it causes more significant issues like contamination or leakage. Preventative maintenance is a proactive way to ensure the quality of your beer while reducing long-term costs.


What is the 'krausen' in home brewing (and should I release it?)

Saturday, December 11, 2021
A massive krausen!
I learned a new brewing word the other day.

It was 'Krausen'.

Which made me immediately say to myself "Release the Krausen!"

But enough with the bad jokes, let's talk about what a krausen is.

The krausen is the foamy head that constitutes on top of fermenting beer as it sits in the fermenter.

A healthy head of krausen is an ideal goal of the home brewer because it's a sign that your beer is fermenting just as it should.

Knowing this can be quite handy because if you are not seeing or hearing bubbles escaping from the airlock, the presence of a krausen build up is proof that the yeast is doing its job and fermentation is occurring.

And just the same as the presence of krausen shows fermentation is occurring, it's disappearance (but not initial lack of) is an indicator that fermentation is complete (or halted if brewing conditions are too cold).

But sometimes these things see the movie The Blob and decide they want to grow...

Preventing a krausen 'blow out' with tubing


Occasionally brewing conditions mean that the yeast is so active, the krausen behaves like it is a kraken released from the gates of hell and it foams up like a fiery tempest and blows out the airlock, just making a heck of a mess all over your brewing equipment!

These beer explosions typically occur with glass carboys which allow pressure to build.
krausen blow off tube
A solution to krausen 'blow out' is using a blowoff tube. One replaces the standard carboy airlock with the tubing.

The tubing can then release into a bottle, bucket or whatever to help with reducing any blow off mess.

Check out the image to the right for an idea on how to set up the blow off tubing. This example uses a steel tube.

If you're not convinced this tubing is worth the effort, consider this.

A common krausen issue is that the airlock can get clogged with foam and any added hops. This leads to a strong pressure buildup in the fermenter which when is it great, the barrel lid, bung or airlock blows off, spewing stuff everywhere and making for a very messy and frustrating cleanup.

There's even the potential for damaging your equipment.

We suggest if you have brewing conditions where this has happened more than once, you may wish to consider grabbing some tubing from Amazon!

Make sure you get a suitable thick pipe, nothing too narrow as that will work against you.

One more thing.

We've not done it ourselves but we have read that some punters fill that bottle or bucket the tubing goes into with water so as to further help retard the foaming krausen!

Have you ever heard of Fermcap-S?


You could also try and prevent too much foam by using an anti foaming agent like Fermcap-SIf you wish to use it in your carboy or fermenter to prevent the krausen from escaping, the dosage is only 2 drops at the start of fermentation. 

Krausen the line...


When you have bottled your beer, it's time to get cleaning that fermenter right? And if you've done everything right, there will be a ring around the line where the krausen rose from.

I call it the Krausen line.

If you don't immediately clean your vessel, it will harden and be a right monster to remove. A good soak with PBW or sodium percarbonate should sort that line of scum out PDQ.

How to use foam inhibitor to avoid 'boil over' or a 'krausen explosion'

Monday, October 8, 2018
pot boil over prevention

Beware the krausen! A watched pot never boils right? 


This rule doesn't apply on brewing day.

Even though you are paying keen attention to your boil, it takes but a second for a boil over to happen, making a mess and causing you to lose wort.

But what if there was a way to stop boil over?


Some pundits recommend that you add marbles or ball bearings to the brew to help boil over.

Or use a spray bottle of cold water whenever the foamy beast raises its head.

But if you want to make sure you don't suffer a boil-over, try using a foam inhibitor!

Foam inhibitor or 'defoamer' is a handy trick to keep your beer from boiling over.

A popular product is 'Fermcap-S'. A fancy way to describe it is that it is a "silicone based food-grade emulsion".

There are two main ways to use it - during the boil and during fermentation.

If you choose to use 'Fermcap-S' to prevent boil overs on the hot side, add 2 drops per gallon for a nice rolling boil.

If you wish to use it in your carboy or fermenter to prevent the krausen from escaping the fermenter, then the dosage is only 2 drops at the start of fermentation. If you didn't know, the krausen describes the foamy head that develops on top of fermenting beer.

If you have added your inhibitor during the boil, there is no need to add any to the fermenter as it will carry over.

When used in the fermenter, 'Fermcap-S' increases the bitterness of your beer (retained IBUs) by about 10 percent.

This sounds dandy but why should I use a foam inhibitor?


Boil-overs are more likely to be a problem if you are using a smaller pot. Users of fermcap have reported being able to make a 5.5 gallon batch in a 7 gallon pot.

While mess is annoying, the real reason you want to prevent this is that the foaming can cause any top-fermenting yeast to be expelled from the fermenter before it can do its job in the wort. 

This then requires the rest of the yeast to work harder to achieve the final terminal gravity which will not necessarily occur if yeast lost has been significant.

There is also another sweet effect of using an inhibitor like Fermcap it actually can help retain the IBUS from the hops - that is to say, it can help your beer become even more bitter when the product is added to the primary fermenter.

Beer is supposed to be foamy! This seems an odd product to use?


Using anti foam may seem to be a counter-intuitive idea. It would seem fair to consider that putting something in wort or fermenting beer to control foam will also kill the head on the finished product.

However, when anti-foams are used properly, quite the opposite is true!

Using vegetable based defoamer


Instead of silicone based products, you can also try vegetable oil versions.

Vegetable oil is a known yeast nutrient and will be consumed by the yeast during fermentation of beer before bottling or kegging.

Commercial breweries use it


Big commercial breweries often use defoamers and anti-foamers as part of their beer processing but given that it's not really within the spirit of purity brewing, it appears not many commercial operations will freely admit to adding silicone based products to their beer!

So what are you waiting for? Here's the cheapest Fermcap I have found on Amazon!
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About the author Jimmy Jangles


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Jimmy Jangles, the founder of The Astromech. I have always been fascinated by the world of science fiction, especially the Star Wars universe, and I created this website to share my love for it with fellow fans.

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