Re-introducing algae terrariums

[avc15]

Another in the "ultra basics" category, this is definitely a rehash.

As a new player you might think algae terrariums aren't very good - they only make 40g/s of oxygen, and your dupes breathe 100g/s. But terrariums also make polluted water, which will offgas into polluted oxygen if you don't sweep it. So in the long run, after you've dropped lots of polluted water on the ground, one terrarium can support more than three dupes!

Links here to more advanced concepts: Neotuck's design - Yunru's manual O2 gen (no algae just sweeping p-water) - (looking for a link to a door compressor / o2 gen)

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Pros:
- it works at high pressure so you don't need gas pumps (the bottles keep gassing above their pressure limit because of other mechanics)
- Plumbing errands make your dupes strong
- Algae is scarce - this build is very efficient with algae - diffusers use too much

Cons:
- Plumbing errands, but really once you get it going, very few.

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Build a bunch of terrariums to get started. I have 3 dupes in this colony, I started with 6 terrariums. We're going to let the polluted water bottles gas off, so also build some deodorizers.

 

The bottle emptier for that p-water tank is set to sweep only, this is very important.

I have some extra deodorizers. It's not 100% necessary unless you're OCD like me - the one on either end is usually enough, until pressure changes for some reason. Then polluted oxygen will get out, unless you built a few extra. I don't want to give my dupes yucky lungs.

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So now I've reached a comfortable pressure. I'm going to cut back to 2 terrariums for my 3 dupes, still more than I should need in the long run.

And, like I mentioned, I've actually been able to shut off those two remaining terrariums because pressure got high enough. See how much p-water I have sitting on the ground - those bottles are still making oxygen. These two bottles have about 2T each of pwater in them.

 

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Last bit, I don't want to sit around micro-managing base pressure - I want the terrariums to stop making p-water when pressure in my base is high enough, and start again when pressure gets low. Luckily, mechanical airlocks do a trick. When the airlock is open, any buildings on top of it shut off. So I build an atmo sensor, set it to 1400g, and now we don't have to micro manage anymore:

 

Maybe put the atmo sensor a few rooms away, because you're trying to maintain pressure in your base, not right next to the oxygen source.

What's the buffer gate for? Debounce logic. An S-R latch with filters on both inputs would work more smoothly, but that's also a bit complicated.

[Yunru]

6 hours ago, avc15 said:

Yunru's manual O2 gen

I actually went a bit crazy with the designs: