So finally, I'm at level 0 / Basement. Could have just left these as decorative blocks, but no, I had to have sort or recycling system down there! I'll fill the details in after reviewing what real recycling stations look like. Suffice it to say, that excrement and urine goes into the 1st tank via hidden plumbing, urine/dirty water gets extracted to the 2nd tank, and the filtered water goes into the general reservoir. Note the pipes that can pump both ways to the rainwater reservoir, in case of drought. Oh yes, and Buggle Trading has some "seaweed" tasting crackers available for free in the cafeteria. Just don't ask where they get them.
Apart from recycling, there's also a number of gas and fuel tanks that get stored on this level, including extracted/recycled gasses. Don't light a match down here!
