How do I install Fluid Physics [Forge]?

Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. Download the .jar. Put it in the .minecraft/mods folder and launch that loader profile. Opens on CurseForge — not every file is mirrored on our own servers.

What Minecraft version does Fluid Physics [Forge] work with?

The listing gives Minecraft 1.16.5, 1.16.4, 1.16.3, among others. This is the version stated by the author or source site, not something we verified ourselves.

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Fluid Physics [Forge]

Java mod listed for Minecraft 1.16. File opened and checked on 3 Oct 2026; downloads from the MC Java Mods app on Android.

by LolHens · on CurseForge

Which Minecraft do you have?

Every version of the game needs its own build. Pick yours, then download — the wrong build installs fine and then does nothing in the game. This mod is built for Forge only.

Minecraft 1.16.4–1.16.5Newest
Minecraft 1.16.2–1.16.3
Minecraft 1.16.1

⬇ Download for 1.16.4–1.16.5 ⬇ Download for 1.16.2–1.16.3 ⬇ Download for 1.16.1

I don't know my version or loader

Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.

No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.

Open in MC Java Mods Get it on Google Play →

Fluid Physics

This mod blends together vanilla fluid mechanics with something a little more realistic plus some small additions. Fluids flowing horizontally will not be affected by this mod. Fluids flowing down will take the source with them. This is intentionally not a realistic fluid simulation in order to not break too much of the vanilla gameplay. If you want something more realistic look in the "Similar mods" section down below.

There is also a Fabric version

Features

Fluid source blocks can flow down
Removes infinite water sources (Can still be created by placing Spring blocks next to fluid sources)
Pistons can pump fluids
Spring blocks generate under naturally generated springs and prevent them from flowing down
Rain refills lakes and oceans (similar to infinite water sources in vanilla)
Works with vanilla clients (you have to set the config option spring/block to a vanilla block like 'mossy_cobblestone')

Requirements

Minecraft Forge
Scalable Cat's Force
MixinBootstrap (only required on 1.15.2)

Screenshots

Fluid Physics [Forge] — Minecraft Java mod, screenshot 1

Videos

Known issues

Under some circumstances fluids can stop flowing (This is why in the video I have the glass block slowing down the water flowing into the sandstone tank)
There were issues reported when using this mod on 1.16.5 together with ForgeEndertech and Optifine or GraalVM. Please upgrade to Optifine G8 or use another JVM.

Similar mods

If you are looking for a similar mod for fabric with more realism have a look at Dihydrogen Monoxide Reloaded by CoolMineman

Also there is the similarly realistic forge mod PhysEx

License

This project uses the Apache 2.0 License. See the file called LICENSE.

Quick facts

Edition: Minecraft Java
File type: .jar
Minecraft versions listed: 1.16.5, 1.16.4, 1.16.3
How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.

Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.

File checked by MCModsHub

Ships as fluidphysics-1.3.2+forge-1.16.2.jar — drop this file into the mods folder
Download size: 5.1 MB
Download link checked 14 Oct 2026 — working

These come from our own check of the pack file, not from the source page.

Explore more

All Mods for Java All Minecraft Java mods Java mods for 1.16