Hydro Upgrade
Mod that make swimming more immersive
Screenshots
About this Mod
This mod aim to change minecraft default swimming mechanic to more realistic one. Hydro Upgrade add new buoyancy system that adjust with player's air and change the way player can move around above water.
Feature
- Limit how height player can swim above water surface. (Not limit when water too shallow or too close to land)
- Simple Buoyancy system.
- Limit ascending and descending swimming speed.
- Water pressure.
Screen Shot
Limit how far above surface player can swim (Holding spacebar)
Available Versions
How to Install Hydro Upgrade 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 "Hydro Upgrade". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.1, 1.20.1
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Hydro Upgrade 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 Hydro Upgrade compatible with fabric?
Hydro Upgrade officially supports fabric for Minecraft 1.21.1, 1.20.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Hydro Upgrade – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Hydro Upgrade 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 Hydro Upgrade with just one click on your server.