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Build a Metal Farm and keep Troilite renewable

Quick answer

Scan all three parts of a ruined Metal Farm, build one with a Mangalloy Ingot and an Axum Bacterial Culture, connect power, then insert the mineral you want it to grow. Reserve one raw Troilite before processing the rest.

By · Updated

How this guide was checked

Coverage: Early Access 1.2 · Buddy System Hotfix 2 (October 6) · official sources checked October 23, 2026 UTC · older routes retain their source/build limits. Research checked 8 Oct 2026. Updated 25 Oct 2026

This guide uses the linked sources and any attributed demonstrations. Platform differences and limitations are noted with the advice they affect.

See the 4 sources
4 sources
Creator clipChecked on screen · 25 Oct 20265 steps1 moment · 0:33
  1. 0:31–1:04Seeding a Metal Farm and watching its timerConnect, seed and harvest · Quick Tips

See it first · Connect, seed and harvest ↓

Older footage · checked Oct 25, 2026 · before Subnautica 2 Early Access 1.2 (Buddy System, August 19, 2026)

0:31–1:04 · 33 sSeeding a Metal Farm and watching its timer

Check the guide’s version notes before following older footage.

Quick TipsFull video ↗
Credits

“How To Use Metal Farm in Subnautica 2” by Quick Tips · May 15, 2026 · Early Access launch window (uploaded 2026-05-15); predates the Adaptive Measures and Buddy System updates

Independent creator · no partnership implied

Creator? Ask us to remove this

Before you start

  • Tadpole prepared for the deep Metal Farms region, Scanner, Repair Tool and spare power.
  • Habitat Builder and Sonic Resonator. Check your vehicle’s displayed depth limit.
1

Unlock the blueprint in the Metal Farms region

Search the ruined farm beside the yellow-green pool. Scan the main body and both prongs for the three required scans. Predators can damage the Tadpole; keep it nearby and leave room to retreat.

Sources for this section
2

Craft the farm without spending your last seed mineral

ComponentFor one farm
Mangalloy Ingot1 Titanium Ingot + 1 Atacamite + 1 Troilite at the Processor
Axum Bacterial Culture1, gathered in the Metal Farms region
Reserve outside the recipeAt least 1 additional raw Troilite if you intend to grow Troilite
Sources for this section
3

Connect, seed and harvest

  1. Place the farm with the Habitat Builder near a working power supply.
  2. Position the transmitter so its connection line reaches the farm. Its listed power requirement is 20.
  3. Insert the mineral to reproduce. The input mineral determines output.

    Older footage · checked Oct 25, 2026 · before Subnautica 2 Early Access 1.2 (Buddy System, August 19, 2026)

    0:31–1:04 · 33 sSeeding a Metal Farm and watching its timer

    On screen: At about 8 m a powered Metal Farm with a blue transmitter beam shows an Open Storage prompt; the diver moves a mineral from the inventory into its STORAGE slot, and the farm then displays a large countdown starting near 09:45.

    Check the guide’s version notes before following older footage.

    Quick TipsFull video ↗
    Credits

    “How To Use Metal Farm in Subnautica 2” by Quick Tips · May 15, 2026 · Early Access launch window (uploaded 2026-05-15); predates the Adaptive Measures and Buddy System updates

    Independent creator · no partnership implied

    Creator? Ask us to remove this

    0:31–1:04Seeding a Metal Farm and watching its timer
  4. Wait for the displayed timer, then harvest the grown node using its current tool prompt. The general Sonic instruction does not establish the current Atacamite interaction.
Sources for this section
4

Find the missing part of the loop

ProblemNext check
Built but inactiveCheck available power and the transmitter connection.
No production timerCheck that an accepted mineral is in the input.
A grown node remains on the farmHarvest with the tool shown by the current node prompt; Atacamite needs a separate current-build check.
No raw Troilite left to seedSearch the resource route; a completed Mangalloy Ingot is not raw Troilite. Do not assume an unconfirmed respawn timer.
Sources for this section
5

Separate construction costs from production stock

Kingy planning example: one farm consumes one Troilite in its Mangalloy Ingot. Keeping another as seed means you need two raw Troilite before that first build. The turbine calculator intentionally excludes farms, power equipment and retained seed minerals; add them to your trip budget separately.

Sources for this section

Related guides

Base power: generators, transmitter connections and outages

Celestine, Atacamite and Troilite: routes from the Alien Ruins

Repair the Power Plant and open the Observatory

Unlock Habitat Builder and make a powered base

Collect Lithium for oxygen gear and Plasteel

Collect Silver for your first tank, tools and electronics

Collect Copper for batteries, wiring and your first base

You’re ready when…

Your checklist

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Did this answer your question?

Sources · 4Official · Walkthrough · checked 8 Oct 2026 · Research checked 8 Oct 2026
Early Access 1.2: Buddy System ↗Current tool scans, co-op and base changes.Official ·
Unlock and power the Metal Farm ↗Three scans, construction, transmitter connection and harvesting.Walkthrough ·
Metal Farm recipe and component chain ↗Mangalloy recipe and Processor chain.Walkthrough ·
Metal Farm operation ↗Power requirement, seed mineral and harvest process.Walkthrough ·

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