I found a slime chunk right inside my straight mine so I dug out a 16x16x3 chunk at level 19 and coordinates 71 19 -120. I have lit up the room light levels are above 10 everywhere and there are no other mobs spawning inside.

I have been waiting for about an hour afk with the game active at around 32 blocks away (coordinates are 90 11 -125) in order to get some slimes to spawn but still not even one.

  • Confirmed slime chunk with - http://chunkbase.com/apps/slime-finder#-1729309068124591226

  • The height level is below 40

  • Several nights have passed

  • Player position is around 32 blocks away from the center of the slime chunk (coordinates of center 7 19 7)

  • Playing on 1.12.1 without any mods
  • There isn't a huge stack of monsters around the slime chunk (there is a ravine right above it but its lit up)
  • I searched for questions like this but they were mostly either related to a different problem that I have already solved or from 2+ years ago.

What could be causing this issue?

  • What do you mean with "7 19 7"? If it's coordinates, it's far away. If it's chunk section numbers, you're above maximum build height. May 7 '18 at 11:04
  • I don't know if 3 blocks height is enough for slimes. Have you confirmed that that works somewhere else? May 7 '18 at 11:06
  • What's the current moon phase? Slime spawning rates depend on that. May 7 '18 at 11:07
  • The moon phase has cycled a few times from full to new. 7 19 7 is the chunk coordinates this means the center of the chunk. They are only provided to show what i mean by center of chunk. The coordinates provided above are the global coordinates at which I stay to see if slimes will spawn. How can I check if 3 blocks high is enough for slimes ? May 7 '18 at 11:17
  • A 3 block gap is tall enough for slimes to spawn. My slime farms always have a 3 block gap between platforms. Can you upload the map so we can look at specifics? I am currently recreating your world to try to reproduce the problem.
    – IronAnvil
    May 7 '18 at 14:14

The coordinates you give are only about 21 blocks apart. Assuming that you have given the center of your farm (71,19,-120) and the location you are standing (90,11,-1225) you may not be far enough away.

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