To note this study uses straight THC and compares it to flower but then for the rest of the study it focuses on the straight THC used in the volcano.
They found tjat the highest setting and an 8L bag is the best for administration efficiency.
That being said i have personally used a volcano and the vapor is so thick and harsh at that setting, it also destroys terps so i recommend 5.5 setting personally. The nice this is we as growers dont need it to be ultra efficient because we often grow a fair amount of supply, so enjoy the smoke as much as it is safe for you and dial it back.
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