At some point I got an itch and looked into what it would take to run such a magic box myself. The lightbulb moment was realizing that of I did manage to pull

At some point I got an itch and looked into what it would take to run such a magic box myself. The lightbulb moment was realizing that of I did manage to pull a ton (or 15) of carbon out of the air by whatever method, I would then have to move that carbon... Somewhere. I had been looking especially at algae bio reactors, which leave you with a particularly soupy waste situation. :)