My 2 liter DIY CO2 setup provides the right amount of CO2 for my 20G tank. If I set up a 10, what would be the best way to cut the CO2 production appropriately? Find a 1 liter bottle and cut everything in half? Less yeast or less sugar in the same-sized container? Thanks for any ideas/experiences. Ellen O'Connell Parker, Colorado mailto:oconnell_wadeash at ix_netcom.com