Frequently Asked Questions

Product information


WiFi settings

Other questions

Product information

How do I setup integrations for my Float? (i.e. With Brewfather or Grainfather)

Please go to our documentation about this topic!

Is my data available for download?

Yes, you can download all brew data as csv files. Just go to the brew from which you want your data, and below the brew graphs there will be a link to the csv files.

Will the My Brewbrain Personal account always be free?

Yes, the personal account will always be free of cost. We are developing premium features that will be available for a small fee.

Does the Float work in a stainless steel fermenter inside a fridge?

We have many users that have very good reception with the Float inside a stainless steel fermenter, which is placed in a fridge. Since everyone's setup and wifi strength differs substantially, we cannot guarantee that you will have good reception with a similar setup. Our advice is to place the WiFi router as close to the fermenter as possible to ensure good reception. If this is not possible, consider using a WiFi repeater, as described in our "Dealing with bad wifi reception" document

How long does the battery of my Float last?

This depends on the usage situation, but it will last longer than multiple fermentations!
If you charge your Float after every use, you should never have battery issues.

How long does it take to charge my Float?

Charging the Float can take up to eight hours, your USB adapter should provide at least 1 A and 5 V.
We recommend to charge your Float overnight, in this case you can be sure it is charged. Be sure the Float is turned off before and while charging.
There is a charging indicator on the Float, if the LED turns from red to green, the Float is fully charged.

Can I use the Float in brews under pressure?

The Float will still function when brewing under pressure at 1 bar or 15 psi. Please keep in mind that spunding valves can influence the measurements.


iPhone users beware!

Newer iphone firmwares might have difficulty connecting to WiFi access points like the Float access point. Please ensure that you have disabled the mobile data roaming (3G/4G/LTE/5G) of your device when connecting to the Float's access point. When connected to the Float's access point, please wait for up to 60 seconds for your phone to display a pop-up that asks you to sign in to the Float's network. After that, follow the onscreen instructions. If you still do not get a pop-up, follow these instructions. This is a known issue for Apple devices, click here for more information Using a different browswer than Safari (e.g. Firefox) can also solve issues when connecting with the Float.

Why doesn't my user account work?

There can be several reasons why your user account doesn't work:

I haven't received a registration e-mail!

If you haven't received a registration e-mail, please check your spam folder! Some e-mail providers and anti-virus software have very strict spam rules which can cause our e-mail to end up in your spam box.

My Float is not registering any data points!

There can be several reasons why your float doesn't register any data points:

My brew is missing some data points!

In most cases the wifi connection is not strong enough to transfer the data to the internet. It is recommend to position your router close to the fermentation setup to have the best signal.
In the right lower corner of your brew you will see the "WiFi signal". The minimum strength needed for good reception is at least -70 dB (values closer to zero are better). When your signal is lower than this (father away from zero), try to improve the signal by placing your extender/router closer to the fermenter.
Also: Check our "Dealing with bad wifi reception" document.

When I set my float to ‘Setup’ mode, I do not see a WiFi network with its serial number

Ensure that your Float is fully charged. Turn the float OFF before and during charging. When charging, you should see a red LED, that changes to green when the Float is fully charged.

If you still do not see a WiFi network with a fully charged battery, ensure that you are close enough to the sensor. Also try a different phone to connect to the WiFi network. Realize that fermenters, refrigerators and walls could decrease wifi signal strengths.

If you still cannot connect to the Float’s Access Point, then please contact and indicate that you do not see an access point in setup mode.

I see the WiFi network from the Float during setup mode, but I cannot connect to the network

When using a phone, turn off mobile data roaming (3G/4G/LTE/5G) before connecting to the Float.

Furthermore, many phones will pop up a notification that you can press to connect to the network.

iPhone/iPad users - using a different browser than Safari (e.g. Firefox) might also solve connection issues

Also, check that your WiFi settings follow our recommended settings.

If this does not work, try the following:
You should now be brought to the Float’s setup.

If you still cannot access the Float setup pages, contact and indicate that you can connect to the access point, but not to the setup pages.

For an explanation why it can be difficult to the Float’s network, see the following:
Many phones/and or laptops have functions to automatically detect whether a WiFi network has internet connectivity. When this is not the case, the phone or laptop will automatically drop the connection to your Float (Since the Float is not a WiFi router). Furthermore, newer smartphones maintain simultaneous connections to 3G and WiFi, and when the WiFi connection does not respond in an expected way, such phones will try their 3G connection instead, and your Float setup process will be disrupted, because the web pages in the Float’s wifi setup process do not exist on the internet. Recent updates for iPhones seem to have trouble connecting to the Float. We have not been able to pinpoint iPhone model and iOS version. If you have trouble connecting with you iPhone, please try a different phone.

During the setup process, my phone disconnects from the Float

When this happens, reconnect to the Float’s network and navigate to in your browser

The reason why this happens is fairly technical. During this process step the Float switches to your router’s WiFi band. If your phone is connected on another band, it disconnects, because a Wifi antenna cannot transmit two bands at the same time.

How to perform a factory reset

If something is not working as it should you can perform a factory reset on the Float: The Float will not lose the saved WiFi credentials or registration, so you will still be able to use it after a factory reset without having to re-register the Float. The calibration from the Float will also not be compromised.

WiFi settings

Some WiFi settings might not work well with the Float. When experiencing trouble when connecting the Float to your WiFi, please change your router's WiFi settings to: If you still experience any issues:

Other questions

My question is not listed!

Please don't hesitate to contact us:
Please mention you Float serial number and user name