Single Reservoir Germ Killer

Build a space and power efficient germ killer that uses only a single liquid reservoir.

The result uses 10W of power (the least possible in the game) and wastes not a single tile in its design. But just let's see what the result looks like.

To make it easier to fill the room with chlorine gas in the end I recommend building the scaffolding in a vacuum. There are several guides on how to make a vacuum in ONI like this one from Tony Advanced.

You need to have some Plastic at hand in the game to build the germ sensor. So get your dupes oily or farm some glossy dreckos.

As for research just unlock everything until space research... it's not that challenging.

Now let's build it.

To kill germs the room needs to be filled with chlorine gas. To provide this helpful element here is how the gas piping looks like.

The staggering 10W of power this build burns are easily provided by either your top or bottom power lines through your base/factory.

Don't worry about brown outs or power shortage. This build won't let any germs escape!

The general idea is as easy as this:

Now to get the liquid flowing with the right priority is a bit more complicated.

But first let's get the pipes in place and add the liquid bridges step by step afterwards.

The setup of the pipes is quite important. Here's why:

So to make sure the water keeps flowing and the germ sensor can detect a change in the germ count (germs don't die in pipes) its flow has to be priority 1. After that we need to clear the overflow from the input to destress the system. So the overflow is priority 2. And when nothing else needs flowing we let new water (and possible germs) into the system.

If our reservoir has send all its contents back into the world to power some surfboards, be a refreshment in a water cooler or catch the next batch of germs in a lavatory it can shut down (open its door underneath) and collect the next load of germs in its belly where they will be happily digested by the surrounding chlorine.

The second most complex part in this build is the automation.

The part that is a bit tricky to understand is the twisted logic of how the door functions in this build. When the door is closed (red signal) the system is ON. And when it's open (green signal) the system is OFF.

So the incoming liquid resets the memory toggle and sets its signal to red (system is ON)
If no more liquid exits the reservoir the outgoing liquid sensor sets the memory toggle through a NOT Gate to send a green signal (system is OFF).

The germ sensor just prevents any pesky germ that tries to escape from exiting by closing the liquid shutoff in its nasty germ face and sends it back to its friends in the reservoir.
Because the implemented logic for the germ sensor works in a "greater or equal to" or "less or equal to" way we set the germ sensor to detect BELOW 0 GERMS to catch them all.

I hope someone caught a glimpse of what a wonderful and challenging game ONI is. Finding proper solutions is quite the task. Making them failsafe is just another level of complexity. Shrinking them down to their minimum size is... where the fun begins.

Maybe you learned a trick or two from this guide to incorporate into your base und give your dupes more time to bath in the sun or play arcade games.

See you next cycle.