Standing False Bottom For 70L Keg King Guten Brewery Systems. Want to get better utilsation from your hop additions? Ditch the hop spider and start using these Standing False Bottoms specifically designed to catch particulate matter above the pump inlet and ball valve of your system's kettle. Used in tandem with a 70L Whirlpool Arm, brewers will be able to stack solid matter in the centre of the kettle after boil, then be able to extract bright clear wort from the brewery system. All stainless steel construction.