
Fluid Flow Controller
FluidFlowController is a lightweight Fabric mod designed to completely disables water and lava flow, along with their block updates and scheduled ticks.
⬇ Download on Modrinth🧊 FluidFlowController
Disable Water & Lava Flow in Minecraft (Fabric 1.21.1)
FluidFlowController is a lightweight Fabric mod designed for server administrators ~~~~who want full control over fluid behavior.
It completely disables water and lava flow, along with their block updates and scheduled ticks — keeping the world static, stable, and lag-free.
💡 Features
- 🚫 Prevents all fluid propagation (no flow, no spreading)
- ⚙️ Cancels scheduled fluid ticks for optimal performance
- 🔒 Blocks block updates caused by water or lava
- 🧩 Includes an in-game command
/ffcto toggle flow in real time - 💾 Saves configuration automatically in
config/ffc.json - 🌐 Compatible with Fabric, Fabric-based Arclight, and dedicated servers
🧭 Commands
/ffc water on|off
/ffc lava on|off
These commands can be used by server operators (permission level 3 or higher) to enable or disable water and lava flow dynamically without restarting the server.
If Luckperms is installed, the permission node ffc.toggle can be used to grant access to these commands.
🛠 Technical Notes
- Implemented using Mixins targeting:
FlowableFluid#flowFlowableFluid#onScheduledTickFlowableFluidUpdateMixin
- Safe, efficient, and zero performance overhead
- Requires:
- Minecraft 1.21.1
- Fabric Loader >=0.17.2+
- Fabric API
📄 License
Licensed under the MIT License — feel free to use, modify, and distribute this mod.
🤝 Contributing
Contributions, improvements, and pull requests are welcome!
If you find a bug or have an idea for enhancement, please open an issue on GitHub.
👨💻 Author
Developed by SirHephaistos
Made with ❤️ for better server performance and control.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.1
- 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 Modrinth — 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.
- Ships as FluidFlowController-1.0.1.jar — drop this file into the mods folder
- Download size: 27 KB
- Download link checked 20 Aug 2026 — working
These come from our own check of the pack file, not from the source page.