NOTE: I use a 2% brine when making beet kvass. It is fine to increase your salt percentage if you are in a warmer climate. My temperatures here are usually around 76-77 degrees Fahrenheit and a 2% brine works perfectly for me. You can experiment with 26g salt (7 cups water) for 1.5% brine, and 35g salt (7 cups water) for a 2% brine if you find you are easily getting mold/kahm yeast.