
Surface Tension
Adds a few lively decorations for your ocean-facing and under-water homes.
Screenshots





About this Mod
![[Surface Tension Title]](https://cdn.modrinth.com/data/cached_images/a705ff60659cee9d6174f57b8a52c0c415733efa_0.webp)
Features
- Bubbles appear in underwater caves for air replenishment.
- Crab claw item that exends block placing and breaking reach when held.
Blocks
Tension rod - Crafted from copper blocks and its' variants. can be used to prevent water from flowing downwards in a 3x3 grid.
Geyser Blocks - Sand and gravel variants that emit bubble entites when below water. Unaffected by gravity.
Hook - A decorative block that can be used to dry cod and salmon fishes when placed above campfires. dried fishes give 10 seconds of Water Breathing upon consumption.
Net - A decorative block which allows any entity to travel up through it, but blocks movement down.
Plankton Bush - An underwater plant that emits "plankton" particles around it. Barnacle clusters placed 1 block below it in a 3x3 grid will grow after some time had passed.
Barnacles - A decorative block found in buried ship chests. Can be placed on all sides of the block, and has three cluster sizes. Place a barnacle on a barnacle cluster to add to it's size.
Dock Post - A decorative block.
Dock Net - A decorative block. Connects to dock posts.
Coral Shelf & Dead Coral Shelf - Decorational blocks. Generate in ocean biomes. act similarly to minecraft's corals.
Mobs
Bubble - Slowly rises in water until it hits something or leaves the water. players can collide with it in order to replenish breathing time.
Crab - The crab from minecraft's mob vote. Spawns in mangrove forests. Use shears to collect its' large claw.
Available Versions
How to Install Surface Tension 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 "Surface Tension". 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
Surface Tension 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 Surface Tension compatible with fabric?
Surface Tension officially supports fabric for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Surface Tension – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Surface Tension 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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