While I have 0 experience with turbo yeast I wonder why you'd lose volume. My experience with beer I've not seen any loss of volume. How much volume are you talking about?
It's not too bad yet. Maybe 5 to 8% of my total volume. But it was quite noticeable after the first night, and it's only had 24 hours of fermentation. I'm inexperienced, but I would have expected a volume increase
during fermentation since the alcohol being produced is less dense than water. Perhaps the mass lost through the release of CO2 makes up for it.
I've thought of another possibility: perhaps the mixture was cooling and lost volume because of that? That would explain why one jug's liquid level decreased more than the other (it would have cooled more while the other was being poured).
Thanks for all the help.