Editing Base Building (section)

=== Nano-Scrubbers ===
You'll need to turn at least one room into a [[Nano-Scrubber]] to filter out nano-pollution that other rooms generate once they're built, which increases as they're upgraded. The nano-scrubbing capacity of the [[Safehouse]] must be equal or greater to the total nano-pollution your rooms are producing; if the capacity would be insufficient for a new room or upgrade, it cannot be built until your increase your nano-scrubbing capacity.

It's best to build your first [[Nano-Scrubber]] room on the middle level adjacent to the elevator. Because Nano-Scrubbers are rooms you'll upgrade to a high level, it's cost-efficient to build them in an inner-room slot, instead of in an outer room slot where you'd have to first upgrade the power level of a different inner room higher than it needs in order to get the power level of your Nano-Scrubber high enough.