Why not using Mesh Tile? because I donвЂ™t want to make a mess (pun intended). I usually use Gas Permeable Tile for this. Both tiles let air flow through them (Mesh also let water through).Д«esides the ladder area, you also need to create an air flow between the floor itself. Once you can create Gas Permeable or Mesh Tile, you can also use them to fill the gap. This is to let the air flow faster between floor. This is not a solution for your O2 generation, the main purpose of this is to clean/purify PO2 from your base.Дupes can jump 1 tile away (vertically), so I usually have a 1 tile gap between the ladder and floor tile. It takes 1000g Filtration Medium and convert 100g PO2 to produce 50g O2 & 500g Clay per second. Unlocked via Sanitation tech, uses Filtration Medium (Sands) to convert Polluted Oxygen to Clean Oxygen. You need to move on from algae conversion and setup Electrolyzer asap for a much better O2 production.Д«esides the Electrolyzer machine, you also need a working Liquid Pump and Piping to deliver the clean water. Unlocked via Percolation tech, uses 1000g water & 120W per second, produces 888g Oxygen & 112g Hydrogen per second. Instead of steady O2 production, this is more of an early solution to clear out CO2. This have better algae conversion but took quite a lot of water and require a lot of attention from your dupes.Дupes will have to refill both the algae & water, this can occupied the dupes time and hinder your colony progression. It takes 30g algae, 300g water & 333.33mg CO2 per second, produces 40g Oxygen per second. Unlocked via farming tech, uses algae and water to convert Carbon Dioxide back to Oxygen. As you progress, you will soon notice that you wonвЂ™t have enough algae to sustain your colony. This may seems efficient at the start, but actually the conversion rate of the algae is not great. It takes 550g algae & 120W per second, produces 500g Oxygen per second.

Oxygen not included pressure