Monster Hunter Wilds Aqua Sac and Flame Sac locations
Aqua Sacs and Flame Sacs in MH Wilds are drops in certain Low Rank hunts

The Monster Hunter Wilds Aqua Sac and Flame Sac are crafting items that are integral to creating certain weapons based around elemental attacks like Fire and Water, but working out where to get them isn't easy. As a rule, Monster Hunter Wilds only tells you where to find something after you've already found it, necessitating exploration and investigation (as well as some lucky guesswork), but we can show you how to find the Flame Sac and Aqua Sac in MH Wilds just below!
How to get the Aqua Sac in Monster Hunter Wilds
To get the Aqua Sac in Monster Hunter Wilds, you need to hunt either of the following monsters at Low Rank: Balahara or Uth Duna. However, neither monster is guaranteed to drop those things, so you may need to hunt them a few times to ensure the drop. It's also a guaranteed quest reward for the optional quests "Sand Sea Surges" and "Veiled by the Tide", which are quests where you hunt - you guessed it - Balahara and Uth Duna.
How to get the Flame Sac in Monster Hunter Wilds
The Flame Sac in Monster Hunter Wilds is a potential drop from Low Rank monsters if you successfully hunt it: Guardian Rathalos. However, like many drops, it's not guaranteed, with only a 2-Star drop likelihood. It is a guaranteed quest reward for the Optional Quest "His Eternal Reign", which itself is just a side quest where you kill a Guardian Rathalos.
It's worth keeping in mind that you really do have to slay these monsters at Low Rank - if you do so at High Rank difficulty, their chance to drop either the Aqua Sac or Flame Sac is negated, as they drop the rarer Inferno and Torrent Sacs for crafting. If you haven't unlocked any of the above monsters yet, just keep progressing the main campaign: they'll show up eventually.
Want more help exploring the wilderness? Find out pick of the best Monster Hunter Wilds mods and how to install them here, or if you're at the point in the game where you're thinking about Flame and Aqua Sacs, you might need help defeating the legendary Monster Hunter Wilds Black Flame!
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Joel Franey is a writer, journalist, podcaster and raconteur with a Masters from Sussex University, none of which has actually equipped him for anything in real life. As a result he chooses to spend most of his time playing video games, reading old books and ingesting chemically-risky levels of caffeine. He is a firm believer that the vast majority of games would be improved by adding a grappling hook, and if they already have one, they should probably add another just to be safe. You can find old work of his at USgamer, Gfinity, Eurogamer and more besides.
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