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The Forbidden Land, Eureka Hydatos

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See also: The Forbidden Land and Baldesion Arsenal

Adventuring Foray.png

The Forbidden Land, Eureka Hydatos

Fair Skies.png Showers.png Snow.png Thunderstorms.png Gloom.png
Eureka Hydatos banner.png
70 (Sync: 70)
Item Level
(Sync: 300)
Party size
1-144 man 1-144 Any class frame icon.png
Time limit
180 minutes
Req. quest
Feature quest And We Shall Call It Hydatos
Kugane (X:8.5, Y:14.2)
The echo icon1.png The Echo
Permanent +150%

Having conquered the burning landscape of Pyros, the expedition pushes onward to a region ruled by water: Hydatos. Here rises the headquarters of the Students of Baldesion, their final destination, but aetheric anomalies and fearsome creatures conspire to ensure that entry will not be easily gained. Yet gain entry to the tower they must if they are to head off the threat of the primal Eureka and lay the isle's mysteries to rest once and for all...

— In-game description

The Forbidden Land, Eureka Hydatos is a level 70 adventuring foray introduced in patch 4.55 with Stormblood.

It is the final area in The Forbidden Land. Hydatos means not merely water, but the living water, such as from rainfall or rivers.


Eureka hydatos1.jpg
  • Level Requirement: Disciple of War or Magic level 70
  • Item Level Sync: 300
  • Elemental Level Cap: 60
  • Party Size: One to eight players
    • While up to 144 players can simultaneously be in the instance, only party sizes of up to eight players are allowed. Players can freely join or leave parties inside the instance, but Party Finder is disabled.
  • Role Restrictions: None
  • Time Limit: 180 minutes
    • The instance timer is specific to each player and commences upon entering the duty.
  • Unrestricted Parties not allowed


Complete the quest And We Shall Call It Hydatos

  • Level: Disciple of War or Magic level 70
  • Starting NPC: Rodney
  • Starting NPC Location: Kugane (X:8.5 Y:14.2)
  • Players must first complete the story of Eureka Pyros.

Shops & Services

Merchant Name Merchant Location
Expedition Artisan (Eureka Hydatos)
(X:20.5, Y:13.3)
Expedition Provisioner (Eureka Hydatos)
(X:19.8, Y:13.9)
Expedition Scholar (Eureka Hydatos)
(X:21, Y:13.7)
Gerolt (Eureka Hydatos)
(X:21.4, Y:13.6)

Eureka Hydatos FATEs

Eureka notorious monster (map icon).png
Fate Name Fate Level Fate Location Eureka Exp Eureka Tomestones Allagan Tomestone of Poetics Element Type Spawn Mob
Eureka notorious monster (map icon).png
Drink Me 50 The Forbidden Land, Eureka Hydatos (X:13.8, Y:21.6) 2,536,625 Eureka 30Allagan Tomestone of Poetics
Eureka notorious monster (map icon).png
I Ink, Therefore I Am 50 The Forbidden Land, Eureka Hydatos (X:10.8, Y:25.6) 11,161,152 Eureka 63Allagan Tomestone of Poetics Water Xzomit
Eureka notorious monster (map icon).png
From Tusk till Dawn 51 The Forbidden Land, Eureka Hydatos (X:10.4, Y:17.2) 12,277,267 Eureka 69Allagan Tomestone of Poetics Earth Hydatos Primelephas
Eureka notorious monster (map icon).png
Bullheaded Berserker 52 The Forbidden Land, Eureka Hydatos (X:8.1, Y:21.8) 13,529,549 Eureka 75Allagan Tomestone of Poetics Ice Val Nullchu
Eureka notorious monster (map icon).png
Mad, Bad, and Fabulous to Know 53 The Forbidden Land, Eureka Hydatos (X:7.1, Y:14.5) 14,936,622 Eureka 81Allagan Tomestone of Poetics Wind Vivid Gastornis
Eureka notorious monster (map icon).png
Fearful Symmetry 54 The Forbidden Land, Eureka Hydatos (X:8.2, Y:26.1) 16,519,904 Eureka 87Allagan Tomestone of Poetics Fire Northern Tiger
Eureka notorious monster (map icon).png
Crawling Chaos 55 The Forbidden Land, Eureka Hydatos (X:24.2, Y:19) 18,304,054 Eureka 96Allagan Tomestone of Poetics Water Dark Void Monk
Eureka notorious monster (map icon).png
Duty-free 56 The Forbidden Land, Eureka Hydatos (X:29.1, Y:23) 19,393,977 Eureka 99Allagan Tomestone of Poetics Lightning Hydatos Wraith
Eureka notorious monster (map icon).png
Leukewarm Reception 57 The Forbidden Land, Eureka Hydatos (X:37.4, Y:26.4) 21,566,102 Eureka 105Allagan Tomestone of Poetics Earth Tigerhawk
Eureka notorious monster (map icon).png
Robber Barong 58 The Forbidden Land, Eureka Hydatos (X:32.2, Y:25.3) 24,390,235 Eureka 108Allagan Tomestone of Poetics Fire Laboratory Lion
Eureka notorious monster (map icon).png
Stone-cold Killer 59 The Forbidden Land, Eureka Hydatos (X:36.3, Y:14) 25,699,605 Eureka 114Allagan Tomestone of Poetics Water Hydatos Delphine
Eureka notorious monster (map icon).png
Crystalline Provenance 60 The Forbidden Land, Eureka Hydatos (X:32.8, Y:19.5) 25,699,605 Eureka 120Allagan Tomestone of Poetics Fire Crystal Claw
Eureka notorious monster (map icon).png
I Don't Want to Believe 60 The Forbidden Land, Eureka Hydatos (X:26.3, Y:29.2) 25,699,605 Eureka 120Allagan Tomestone of Poetics
Eureka notorious monster (map icon).png
The Baldesion Arsenal: Expedition Support 60 The Forbidden Land, Eureka Hydatos (X:18.7, Y:28.4) Eureka 120Allagan Tomestone of Poetics

Logos Actions

One additional logogram and six new logos actions have been added.

Logos Actions7.png

Eureka Weapons

After fully augmenting a Eureka weapon in Pyros and proceeding to a certain point in the Hydatos story, you will be able to augment your Eureka weapon further by speaking to Gerolt in Hydatos (X:21.4 Y:13.6).

An upgrade to Hydatos weapons. Weapons will have a new model and swirling particle effects. This step grants the weapon's final appearance and maxes out its stats, excluding elemental stats that are effective in Eureka zones only. If you only care about the earning the glamour and don't care about the elemental stats, you can stop after completing this step.

Item Quick Reference Total for every weapon
Hydatos Crystal x350 Crystalline Scale x5
Hydatos Crystal x5250 Crystalline Scale x75
Eureka Weapons (iLvl 405)
Antea Eureka Antea Eureka (PLD) Bellerophon Eureka Bellerophon Eureka (PLD) Dumuzis Eureka Dumuzis Eureka (MNK)
Shamash Eureka Shamash Eureka (WAR) Daboya Eureka Daboya Eureka (DRG) Circinae Eureka Circinae Eureka (BRD)
Kasasagi Eureka Kasasagi Eureka (NIN) Rose Couverte Eureka Rose Couverte Eureka (WHM) Paikea Eureka Paikea Eureka (BLM)
Tuah Eureka Tuah Eureka (SMN) Jebat Eureka Jebat Eureka (SCH) Xiphias Eureka Xiphias Eureka (DRK)
Mollfrith Eureka Mollfrith Eureka (MCH) Albireo Eureka Albireo Eureka (AST) Torigashira Eureka Torigashira Eureka (SAM)
Brunello Eureka Brunello Eureka (RDM)
Weapon Tier iLvl Items needed
Hydatos 390 Hydatos Crystal x50
Hydatos +1 395 Hydatos Crystal x100
Base Eureka 400 Hydatos Crystal x100
Eureka 405 Hydatos Crystal x100, Crystalline Scale x5

How to acquire items to upgrade

  • Hydatos crystal icon1.pngHydatos Crystal: These are acquired by killing Notorious Monsters in Eureka Hydatos. The higher level the Notorious Monster, the more crystals it will drop.
  • Crystalline scale icon1.pngCrystalline Scale: 3 scales will drop each time you complete the FATE Eureka: Notorious MonsterCrystalline Provenance with gold medal credit in Eureka Hydatos, which requires you to kill the notorious monster Provenance Watcher.

Physeos Weapons

An upgrade to Eureka weapons. Stats and appearances are identical to Eureka weapons, except that they have extra Elemental Bonus stats that increase the weapons' power in Eureka zones only (including The Forbidden Land Eureka The Baldesion Arsenal).

Item Quick Reference Total for every weapon
Eureka Fragment x100
Eureka Fragment x1500
Physeos Weapons (iLvl 405)
Antea Physeos Antea Physeos (PLD) Bellerophon Physeos Bellerophon Physeos (PLD) Dumuzis Physeos Dumuzis Physeos (MNK)
Shamash Physeos Shamash Physeos (WAR) Daboya Physeos Daboya Physeos (DRG) Circinae Physeos Circinae Physeos (BRD)
Kasasagi Physeos Kasasagi Physeos (NIN) Rose Couverte Physeos Rose Couverte Physeos (WHM) Paikea Physeos Paikea Physeos (BLM)
Tuah Physeos Tuah Physeos (SMN) Jebat Physeos Jebat Physeos (SCH) Xiphias Physeos Xiphias Physeos (DRK)
Mollfrith Physeos Mollfrith Physeos (MCH) Albireo Physeos Albireo Physeos (AST) Torigashira Physeos Torigashira Physeos (SAM)
Brunello Physeos Brunello Physeos (RDM)
Weapon Tier iLvl Items needed
Physeos 405 Eureka Fragment x100

How to acquire items to upgrade

  • Eureka fragment icon1.png Eureka Fragment: These are exclusively acquired inside Duty.pngThe Baldesion Arsenal. A complete clear yields 28 fragments total, with each boss defeated dropping a portion of that total amount.

Elemental Armor Sets

Eureka armor augmentation will be unlocked once 56 unique logos actions are registered in your log.

Other Rewards

Happy Bunnies

Hydatos is also home to many a happy bunny. As a reward for saving them from imminent peril, happy bunnies will help you find hidden treasure on the island.

EurekaBronzeBunnyChest.png Bronze

EurekaSilverBunnyChest.png Silver

EurekaGoldBunnyChest.png Gold

Notorious Monsters

Eureka hydatos2.jpg

Players may encounter notorious monsters that cannot be found in other regions of Eureka. Those who would engage them are advised to seek aid from other adventurers.

Defeating notorious monsters yields a great deal of elemental EXP, as well as various rewards.

The Baldesion Arsenal

The baldesion arsenal1.png
The baldesion arsenal2.png

The Baldesion Arsenal is a brutally difficult open dungeon that can be challenged by up to 56 players at once. To enter, you will need to complete the main Eureka storyline and prepare for the worst.

The entry requirements for this duty are extremely strict, as savage bosses, devious traps, and an effect that prevents resurrection by certain means all await you within.

Those who hope to challenge this dungeon should read all available information thoroughly, and properly understand the risks before entering.

Entering the Baldesion Arsenal

Aetherial nodes throughout Hydatos can provide access to the Baldesion Arsenal.

To make use of these nodes, your elemental level must be 60. You will also require a particular status enhancement.

Aetherial Nodes

Aetherial nodes1.png

There are two varieties of aetherial nodes: unstable blue nodes, and stable red nodes. Regardless of type, each node will disappear once accessed by a player, or if a certain amount of time passes without its being accessed.

  • Only the player who accesses a node will be transported, even if that player is in a party at the time.

The appearance of aetherial nodes is related to the atmospheric condition umbral turbulence.

Unstable Aetherial Nodes

An Aetheric Stabilizer is required to use unstable nodes. Aetheric Stabilizers can be acquired in Hydatos through various means, and will be consumed once they are used to access a node.

Stable Aetherial Nodes

Stable nodes do not require the use of Aetheric Stabilizers. However, each will only appear after a certain amount of time has passed following the disappearance of an unstable node.

Resurrection Restrictions

The detrimental status effect "Resurrection Restricted" will be applied upon entering the Baldesion Arsenal. While this status is active, you can only be resurrected via limit break or a specific logos action. For this reason, be aware that KO carries a heavy risk.

Withdrawal and Re-entry

If you use choose the Return function from the menu, or accept the prompt to return to the starting point while KO'd in the Baldesion Arsenal, you will be removed from the dungeon and transported to the expedition camp in Eureka Hydatos. To re-enter the dungeon, you will once again need to access an aetherial node, so think carefully before returning.


Main article: The Baldesion Arsenal#Loot

Those who defeat the bosses within and clear the entirety of the Baldesion Arsenal will be richly rewarded. To do so will be no mean feat, however─you must communicate well with your fellow adventurers if any of you are to reach the prize.


This duty is associated with the following achievements:

Name Points Task Reward
Mapping the realm eureka hydatos icon1.png  Mapping the Realm: Eureka Hydatos 10 Discover every location within the Forbidden Land, Eureka Hydatos. -
Making the most of hydatos icon1.png  Making the Most of Hydatos 10 Complete all the story objectives within the Forbidden Land, Eureka Hydatos. Achievement title icon.png Eurekan Explorer
Really making the most of hydatos icon1.png  Really Making the Most of Hydatos 0 Truly complete all the story objectives within the Forbidden Land, Eureka Hydatos. -