Glass is great for fermenting. It carries no odors, and has a smooth interior which will not harbor bacteria. This 6 gallon carboy can be used for primary fermentation. No need to rack into a secondary for most session beers… as glass does not allow o2 to migrate through the walls. Just pitch your yeast, and allow the yeast to perform all 3 stages of fermentation in the same vessel… no need to disturb your beer until it’s done. Fermentations are fun to watch in glass… the yeast really put on a show! Easy to clean, easier to sanitize!