Other Homebrew Fermenters & Vessels

How do I choose a fermenter size for a 23-litre beer batch?

Choose a vessel with room above the 23 litres for fermentation foam, also called krausen. A nominal 30-litre bucket leaves space above a 23-litre brew; a 23-litre container filled to the brim does not. High-foaming brews can need more headspace, so the vessel’s total capacity is not a guaranteed maximum batch size.