Carboy Bung (Silicone) - Breathable #10 Type_Ferrule consider using a double dose

consider using a double dose or performing a staggered nutrient addition to support the yeast through the increased alcohol stress

US-05 forms a firm sediment at the end of fermentation

a sturdy back nut

stainless steel floor

allowing you to use a single element to gently hold temperatures

Carboy Bung (Silicone) - Breathable #10 Type_Ferrule consider using a double doseFits PET Carboys. A breathable Silicone stopper that acts as both a stopper and an airlock. Unique design allows CO2 pressure to escape but keeps Oxygen and airborne contamination out. Quickly became our stopper of choice for wine. Used by numerous commercial wineries. Also has great application for beer ferments: Will create a vacuum if fermenting wort cools (as opposed to pulling water in from your traditional airlock.) Air tight seal is great for