i have been considering trying to do an ice/bubble run to extract and then winterize that return in ethanol. doing so to eliminate having to use solvent for the main extraction. so some questions for the members who have experience with both... will an ice/bubble extraction yield the same return as a solvent extraction? why do most use butane instead of ice to extract? is it because its faster? or are there other reasons? also can one do an ice/bubble run with quantities as small as a .5oz or .25oz? i saw that they offer one gallon size bags for small runs. how much is needed for a "small run"? will a .25oz work? any help is appreciated!