What is the difference between the six water profiles?

Currently, we create 6 water profiles: Classic Light Roast Profile, Medium Roast Profile, Dark Roast Profile, Espresso Profile, Cold Brew Profile, and Low Acid Profile. Each profile comes in a variety of stick sizes (1 gallon, 5 gallon, or 2 liter), excl. the Low Acid Profile, which is currently only available in 1 gallon sizes. Here are the details of each profile:

Classic Light Roast Profile:

This water profile is recommended for traditional drip coffee brewers or any manual brewing method (AeroPress, Chemex, V60, etc.) providing brighter, cleaner flavors and higher acidity in light roast coffees. Ingredients:

Magnesium Sulfate
Calcium Citrate
Sodium Chloride

Medium Roast Profile:

This profile is designed to optimize your water for medium roast coffee. It contains more buffer than the Light Roast Profile to help provide a more balanced taste with more sweetness and less acidity. It also works great with any brew method. Ingredients:

Magnesium Sulfate
Calcium Citrate
Potassium Bicarbonate

Dark Roast Profile:

This water profile helps provide smoother flavors while preserving chocolate and nutty characteristics in your dark roasted coffees. Ingredients:

Magnesium Sulfate
Calcium Citrate
Sodium Bicarbonate

Espresso Machine Profile:

This water profile is specially engineered for your espresso machines avoiding the use of water boiler-destroying chlorides. It helps protect your machine's boiler while simultaneously providing fantastic shots of delicious espresso. Ingredients:

Magnesium Sulfate
Calcium Citrate
Potassium Bicarbonate

Cold Brew Profile:

This water profile makes it easier to acquire the tasting notes commonly sought after in cold brew coffees like chocolate and molasses as well as creamier body and reduced bitterness. Reduces acidity up to 3x (300% reduction). Ingredients:

Magnesium Sulfate
Sodium Bicarbonate
Potassium Bicarbonate

Low Acid Profile:

This water profile will help transform any of your favorite coffees into a "low acid coffee." This is the perfect profile for those who struggle with acid reflux or heartburn due to the acidity found in coffee. One stick added to 1 gallon of water can equal up to a 300% reduction in acidity as measured by pH. Ingredients: