Strong Acid is one of those materials in Subnautica 2 that players hit a wall on fairly early. You need it to craft a Power Cell, and you need a Power Cell to get the Tadpole mini-sub running. The problem? It doesn't come from the same organisms as Mild Acid, and the crafting station required isn't one you start with.
Here's the lowdown on exactly what's involved and where to go.
The Processor facility comes first
Before any crafting happens, you need to unlock the Processor facility by scanning one. The closest accessible example sits inside the Old Habitat, roughly 350 meters north of the Life Pod. This is the same location NOA directs you toward when tracking down a black box, so if you've been following that quest line, you'll already know the route.
Scanning the Processor adds it to your blueprint list. Build it at your base and you're set up to produce Strong Acid once you have the ingredients.
Where Necrolei Cysts actually grow
The ingredient you need is the Necrolei Cyst, a turquoise flower that grows on top of Stilt Orbs in the jellyfish forest north of the Life Pod. As you push north, the environment shifts noticeably: the water takes on a blue-ish hue and Jelly Lei structures with long tentacles start appearing on both sides.
Once you reach the Old Habitat, turn left toward the large plants with pink tendrils. The Stilt Orbs are nearby, identifiable as orb-shaped growths perched on pink stalks with flowers at the top. Pull out your Survival Multitool and cut the cyst free.
Each Strong Acid requires 2 Necrolei Cysts, so gather more than you think you'll need while you're already in the area. Backtracking eats into your oxygen budget fast.
The jellyfish forest has enough Stilt Orbs clustered together that you can stock up in a single dive without much difficulty.
Stilt Orbs in the jellyfish forest
The alternative recipe worth knowing
Necrolei Cysts aren't the only path to Strong Acid. The Processor can also produce it using sulfur and gold, but that route has a significant catch. Sulfur is findable in areas populated by large Coral Crabs, which is manageable. Gold, though, requires unlocking the Heat Tolerance adaptation before you can access the zones where it appears. That's a meaningful progression gate, making the Necrolei Cyst method the faster option for players who haven't yet pushed into heat-heavy biomes.
The sulfur-and-gold recipe is worth keeping in mind for later runs, especially once you've got Heat Tolerance sorted. If you're already tracking down sulfur for other crafts, the sulfur location guide covers the exact spots to farm it efficiently.
What Strong Acid actually unlocks
The payoff for all of this is the Power Cell, which is the component that gets the Tadpole submersible operational. The Tadpole dramatically expands your range underwater, making it one of the most impactful early vehicles in survival games of this type. Getting Strong Acid sorted early means you're not stuck swimming everywhere while other players are already scouting deeper biomes.
For players building out their full crafting chain, the Subnautica 2 guides collection covers everything from salt farming to battery crafting, which feeds into the same Power Cell recipe you're working toward here.
