Learning to homebrew
To avoid infection, carbon dioxide needs a way to escape without letting in outside bacteria or wild yeast.
The truth is that any airlock will work well during fermentation as long as it is clean and filled with sanitizer.
NO!
This style is WAY easier to clean and holds a lot of sanitizer.
Often overlooked, a blow-off hood allows you to use both a blow-off tube for maximum effectiveness during active fermentation!