
Flood Fill
A building utility adding flood fill commands.
About this Mod
This mod adds three flood fill commands analogous to the paint bucket tool in a photo editor. The flood fill algorithm is given starting coordinates and will search through all connected blocks matching the block at the starting coordinates. After finding all connected blocks, it replaces them with the block specified for the fill.
/flood is the basic flood fill command, taking starting coordinates and the block to place.
/flood <start: x y z> <block>
/floodbox takes two more coordinates for the corners of a rectangular bounding box to limit the search.
/floodbox <start: x y z> <from: x y z> <to: x y z> <block>
/floodplane limits the flood fill to a specific plane. This could be useful for filling the walls, floor, or ceiling of a building.
/floodplane <xy, yz, or xz> <start: x y z> <block>
Available Versions
How to Install Flood Fill on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.1).
Install Mod
Open the mod browser in the dashboard and search for "Flood Fill". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.1
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Flood Fill server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.
Is Flood Fill compatible with fabric?
Flood Fill officially supports fabric for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Flood Fill – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Flood Fill consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install Flood Fill with just one click on your server.