probably 0-12"
for what its worth, my beer is about 42F, my psi is about 10-12, and I use 8 feet of line to balance my system.
my mead keg only has a 6ft line, and the mead rockets out of the keg, losing some carbonation. 2 feet of line makes a huge difference.
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Malkore
Primary: English Mild
On tap: Pale Ale, Lancelot's Wheat, English Brown Ale, Steam Beer, HoovNuts IPA
Bottled: MOAM, Braggot, Raspberry Melomel, Merlot, Apfelwein, Pyment, Sweet mead, Cabernet
Gal in 2009: 27, Gal in 2010: 34, Gal in 2011: 13, Gal in 2012: 10
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