How to Farm Acid

Players can farm Acid in Once Human by making an Acid farm, or through other methods like defeating enemies or crafting Acid at a Synthesis Bench. Find out how to get Acid, how to make an automatic Acid farm, and its uses in this guide!

Construct Water Pumps in Polluted Areas

To create a nearly fully-automatic Acid Farm, players need to construct a Water Pump in an area that is polluted by Stardust. This pump will generate Polluted Water.

Entering polluted areas will reflect in the Pollution Level on the cradle, and also give the player a notification saying "The Stardust pollution is getting worse.". Note that these areas also drain Sanity when entered.

Also Have a Source for Dirty Water

Players will also need to have a constant supply of Dirty Water. This can be accomplished by building a Water Pump in non-polluted areas, or collecting from Water Tanks connected to Rainwater Collection Systems after it rains.

Connect the Pumps to a Water Tank and Purifier

Players will then need to connect the Water Pump to a Water Tank to collect the water, then to a Purifier Facility.

The Reverse Osmosis Purifier is recommended, as it processes the Polluted Water faster, but all purifiers will yield Impure Acid from processing Polluted Water.

Purify the Dirty Water for Pure Water

Similarly, players also need to purify Dirty Water in order to get Pure Water, to be used in the next step of the farm.

Connecting a Dirty Water Pump or a Rainwater Collection System to a Water Tank can automate the collection of Dirty Water, and the Tank can then be connected to a Purifier.

Place Impure Acid in a Brewing Barrel

Once both Impure Acid and Pure Water are obtained, players can place both items into a Brewing Barrel, which will automatically produce Acid using 10 Impure Acid and 1 Pure Water every 20 minutes.

As the Impure Acid does not flow through pipes, players will have to manually add the Impure Acid into the Barrel. Pure Water, however, can be transferred via pipe, and can be automated accordingly.

Electricity-Intensive Set-Up

Note that the facilities in this set-up use lots of Electricity in order to function.

Players will need to ensure that their base has enough Generator Facilities, or they may need to construct more or upgrade existing ones with an Electric Eel to make use of this farming method.