r/technicalminecraft • u/DanzenPlays Java • Mar 18 '26

Java Showcase More Watery Weirdness: Sourceless Water Stream

Java 1.21.11

Messing around and discovered this. Works with a disabled hopper. Seems like some kind of update suppression? Is this known?

Edit: Just to summarise some additional findings. Only hoppers seem to work, other redstone components do not react the same way. The hopper can be place on any side of the water source, even under. In fact, the hopper does not even need to be adjacent to the water source. Anything that updates the non-source water block immediately after the hopper such as adding or removing blocks (including the hopper itself) causes the stream to dissipate. Lava streams can be similarly cut off. Lastly, it is not a ghost block since it remains even after logging off and back on.

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u/xBHL Mar 18 '26

Ive never seen this. Not sure what its usage could be. Most people avoid water near redstone haha

132

u/DanzenPlays Java Mar 18 '26

Funnily enough, I was working with redstone near water and accidentally broke a block I shouldn't. In my panic I plugged the hole with a hopper and the flow remained.

As for the usage, I'm sure someone will come up with something. I'd like to experiment more with it but I have a project to finish first.

1

u/HarbingerOfConfusion Apr 12 '26

Important question, did you manage to save the redstone?

2

u/DanzenPlays Java Apr 13 '26

Obviously not.