A conduit gives you underwater breathing and mining speed without potions
A conduit is a block in Minecraft that creates a protective bubble around you underwater. When it is active, you can breathe normally, mine faster, and see clearly without a helmet or potion. You build it by placing a conduit block in the center of a frame made from prismarine blocks, then activating it with water. The larger the frame around it, the bigger the protection zone.
The conduit itself is the small dark block at the center. You get it by defeating the Elder Guardian — a boss mob that spawns in ocean monuments. Once you have the conduit block, the frame takes prismarine, which you also find in ocean monuments or craft from prismarine shards and crystals. The whole setup takes time to gather but works indefinitely once built.
Key Takeaways
- You need a conduit block (dropped by Elder Guardian), prismarine blocks, and water to build a working conduit.
- The conduit frame must be made of prismarine blocks in a 3×3 pattern on each of four sides around the conduit center.
- A full 7×7×7 frame gives you the maximum protection zone of 96 blocks in all directions.
- The conduit only works when submerged in water and powered by the prismarine frame around it.
Finding the conduit block and prismarine in ocean monuments
The conduit block drops from the Elder Guardian, a three-eyed mob that guards ocean monuments. Ocean monuments are large underwater structures made of prismarine and dark prismarine, found in deep ocean biomes. You can locate them by looking for the distinctive pyramid shape or by using a map from a cartographer villager.
When you enter an ocean monument, the Elder Guardian will attack you with a mining fatigue effect that slows your digging speed to nearly zero. You need to either kill the Elder Guardian or wait out the effect (which lasts 5 minutes) before you can mine the prismarine blocks you need. Bring a sword, shield, and healing potions. The Elder Guardian drops the conduit block when defeated, along with some prismarine crystals and shards.
You will also need prismarine blocks from the monument itself. Mine them with a pickaxe — they drop prismarine shards, which you can craft back into blocks. A full conduit frame requires 42 prismarine blocks if you build the largest version, so plan to spend time gathering or crafting.
Building the frame around your conduit block
The conduit frame is built in layers around the conduit block at the center. Each layer is a 3×3 square of prismarine blocks, with the conduit in the middle. You need at least one complete layer for the conduit to work, but the more layers you add, the larger your protection zone becomes.
Here is the structure for a full-size conduit with maximum range:
| Frame Size | Prismarine Blocks Needed | Protection Radius |
|---|---|---|
| 1 layer (3×3) | 8 | 32 blocks |
| 2 layers (3×3×2) | 16 | 64 blocks |
| 3 layers (3×3×3) | 24 | 96 blocks |
| 4 layers (3×3×4) | 32 | 96 blocks |
The conduit must be completely submerged in water for the frame to set up. Place the conduit block first, then build the prismarine layers around it. You can use dark prismarine or prismarine bricks as well — any prismarine variant counts toward set up. Once the frame is complete and water surrounds it, the conduit will glow and emit particles, showing it is active.
What the conduit does when it is active
An active conduit grants three effects to any player inside its protection zone: water breathing (you can breathe underwater), haste II (mining and digging is 40% faster), and night vision (you see clearly underwater without a helmet). These effects only work while you are submerged and within range of the conduit. If you leave the water or swim too far away, the effects stop when ready.
The conduit also damages hostile mobs that enter the protection zone, dealing 4 damage every 2 seconds to any mob except the warden. This makes it useful for defending an underwater base or farm. The damage does not affect passive mobs like fish or axolotls.
You do not need to do anything to maintain the conduit once it is built. It runs on its own as long as it stays submerged and the frame remains intact. If the frame is damaged or the water drains away, the conduit stops working until you repair it.
Placing your conduit in a useful location
The best place for a conduit is at the center of an underwater base or farm where you spend the most time. Many players build conduits inside a glass dome or chamber so they can work comfortably without drowning. The protection zone extends 96 blocks in all directions from the conduit center with a full frame, so you can cover a large area.
If you are building an underwater farm or mining operation, place the conduit where it will protect the most space. You can also build multiple conduits in different locations if you have the resources. Some players create a central hub with a conduit and then tunnel out to different work areas.
Make sure the conduit stays submerged. If water drains away (from a leak or a block being removed), the conduit stops working. Use waterlogged blocks like stairs or slabs to prevent water from flowing away, or build walls around your conduit chamber to contain the water.
Alternatives if you cannot reach an ocean monument
If ocean monuments are too far away or too dangerous, you have other options for underwater work. Potions of water breathing last 3 to 8 minutes depending on the type and let you breathe underwater without a conduit. You can also wear a helmet with the respiration enchantment, which extends your air supply underwater.
Turtle shells are another option — you can wear them as a helmet and they give you water breathing when you have eaten recently. These are easier to obtain than a conduit if you find a sea turtle beach. However, none of these options give you the haste effect or the automatic mob damage that a conduit provides, so a conduit is still the best long-term solution for serious underwater work.
Frequently Asked Questions
Do I need to defeat the Elder Guardian to get a conduit?
Yes, the Elder Guardian is the only source of the conduit block in survival mode. You must travel to an ocean monument and defeat it. The Elder Guardian drops one conduit block, so you only need to do this once per conduit you want to build.
Can I build a conduit in the Nether or End?
No, the conduit only works in the Overworld and only when submerged in water. It will not set up in lava or in other dimensions. You can place the block, but it will not function until it is in water in the Overworld.
What happens if part of my conduit frame breaks?
The conduit stops working when ready if any prismarine block in the frame is removed or destroyed. You need to replace the missing block to reactivate it. The frame must be complete and intact for the conduit to function.
Can I use other blocks instead of prismarine for the frame?
No, only prismarine, dark prismarine, and prismarine bricks count toward the frame. Other blocks will not set up the conduit. You must gather these blocks from ocean monuments or craft them from prismarine shards and crystals.
How far does the conduit protection zone reach?
With a full three-layer frame, the protection zone extends 96 blocks in all directions from the conduit center. With fewer layers, the range is smaller — a single layer gives 32 blocks of range. The zone is spherical, so it covers all directions equally.