Is 1 running ventilator enough of evidence that a closed room or a room which has forcefields at the open sections will be airtight and therfore should show oxygen in the N menu? Do I need more ventilators in a very large room like a giant hangar of a CV? Thanks,
Yes, 1 is enough but you might just need more oxygen tanks though. And watch for CPU if you're having it "on". Check with the debug tools to show airtight blocks; there might be a hole somewhere. If you find nothing, close the game, come back and check again.
Thanks to confirm that 1 ventilator is enough. And yes, there was a leak behind a oxygen tank that led directly to a exterior weapon, I fixed that and now oxygen is showing.
