Fermentation Tracking

Log gravity, temperature and pH readings and follow fermentation on a chart.

Fermentation Tracking is Foambyte's fermentation log. During primary fermentation and conditioning you record gravity, temperature, pH and drained volume, and Foambyte plots them on a trend chart next to the stage's planned duration. The latest gravity becomes the batch's final gravity, so you always know where fermentation stands.

Fermentation readings in Foambyte: a table of gravity in Brix, temperature, pH and drained volume logged during primary fermentation

Fermentation is where most of a beer’s character is decided, and most of it happens out of sight. A few gravity and temperature readings a day are enough to know whether the yeast is working, whether the temperature is drifting, and when the beer is ready to move on. Fermentation Tracking keeps those readings together and draws them on a chart, so trends are obvious at a glance.

Who Fermentation Tracking is for

It is for homebrewers who check gravity with a hydrometer or refractometer and want a cleaner log than a notebook, and for nano and small breweries that need a fermentation record for every tank and batch. It works the same for beer, cider and mead.

How to track a fermentation in Foambyte

  1. Start the stage. When brew day ends, the batch moves to primary fermentation with its original gravity, transfer temperature and volume already recorded.
  2. Record the pitch. Log the yeast you actually pitched, so the batch reflects what went into the fermenter.
  3. Log readings. Add gravity, temperature, pH and drained volume whenever you take a sample. Each reading gets a date and time.
  4. Watch the chart. Switch between the readings table and the chart to see gravity fall and temperature move.
  5. Move on when it’s done. The latest gravity becomes the final gravity; record the transfer temperature and volume and continue to conditioning, where you can keep logging.

Fermentation trend chart in Foambyte, with gravity falling and temperature rising slightly during the first days of fermentation

What you can do with Fermentation Tracking

  • Keep a complete fermentation log. Gravity, temperature, pH, drained volume and notes, with a date and time for every reading.
  • See trends on a chart. Gravity and temperature are plotted together, each on its own scale, and the chart can show all readings or the last reading per day, week or month.
  • Compare with your targets. Fermentation vitals put the recipe’s targets next to the batch’s latest values.
  • Follow the schedule. Each stage shows its planned dates and the current day, such as “Day 2 of 8”.
  • Record additions. Log dry hops and other additions during fermentation and conditioning, and mark a diacetyl rest.
  • Use your own units. Gravity in SG, °Plato or °Brix, temperature in °C or °F.

A worked example: the first day of an Irish Red Ale

An Irish Red Ale went into the fermenter at 12.0 °Brix (about 1.048) and 65 °F. Readings every three hours show the classic start of an ale fermentation: almost no change for the first six hours while the yeast gets going, then the gravity falls steadily to 9.2 °Brix by the next morning while the temperature climbs to 68 °F from the heat of fermentation.

Those 9.2 °Brix are not the real gravity, though: alcohol makes a refractometer read high. Correcting for alcohol with the refractometer calculator gives the true gravity, and the ABV calculator shows how much alcohol the beer has so far. Hydrometer readings taken at a warm temperature can be corrected with the hydrometer temperature correction.

Fermentation Tracking and the rest of Foambyte

Fermentation is one stage of Batch Tracking, so the readings sit alongside the brew day, conditioning and carbonation records of the same batch. The schedule comes from the brew cycle in your brewing profiles, and when IoT integration arrives, readings from Tilt hydrometers will land on the same chart automatically.

Log your next fermentation for free and see it on a chart.

Frequently asked questions

What can I record in a fermentation reading?

Each reading has a date and time, gravity, temperature, pH, drained volume and an optional note. You can log readings in primary fermentation and in conditioning, and see them in a table or on a chart of gravity and temperature over time.

How do I know when fermentation is finished?

Look for a gravity that stays the same over two or three days near the final gravity you expect. The chart makes a flat gravity line easy to spot. The planned end date of the stage is a guide; it doesn't confirm that fermentation is complete.

Can I enter gravity in Brix from a refractometer?

Yes. Readings follow your gravity unit, which can be specific gravity, Plato, Brix and others. Once fermentation has started, refractometer readings need an alcohol correction; the free refractometer calculator does it with Sean Terrill's formula.

Can a Tilt hydrometer send readings automatically?

Automatic readings from Tilt hydrometers are coming with Foambyte's IoT integration. Until then, you can type the Tilt's readings in as manual readings and they appear on the same chart.

Does Foambyte track drained volume and losses?

Yes. Each reading can include the volume drained from the fermenter, such as yeast dumps or samples, so the batch keeps an accurate count of how much beer is left at transfer.