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I am building a slime farm and I am thinking of ways to stop slimes from spawning at certain areas.

Basically above each spawning level I have a 2-block high are where I do my lighting. It looks like this:

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To be clear I am not standing on the roof of the spawning area.

There are a lot of spots where slimes can easily spawn, and I do not want them spawning there.

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1 Answer

up vote 6 down vote accepted

Slimes can spawn in any light level, so having your area well-lit will not stop them.

However, just as with other mobs, slimes require an opaque block to spawn on top of. You can stop them from spawning by lining the floor of your area with transparent blocks, such as glass or slabs.

Additionally, the three sizes of slimes require different amounts of room (i.e. non-opaque blocks like air, signs, torches, etc.) for them to spawn:

  • Big Slimes: 3x3x3 block area.
  • Small Slime: 3x3x2 block area.
  • Tiny Slime: 1x1x2 block area (or 1x1x1 if the upper block is not opaque).

So, another solution is to simply fill in the area as much as possible.

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I guess slabs or glass will work, but that is an awefull lot of recources yet again. But no other way right? –  Saif Bechan Jun 12 '12 at 18:47
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@SaifBechan You get 2 slabs for every block you use, so crafting slabs is actually more efficient than other floor materials. –  Ronan Forman Jun 12 '12 at 18:53
    
OK well I guess that is true. Can I make the whole roof out of half slabs? Can I place redstone and redstone repeaters on half slabs? –  Saif Bechan Jun 12 '12 at 18:56
    
@SaifBechan: You can't place redstone circuitry on slabs, but slabs can also be placed on the underside of the ceiling. However, the easiest solution for you may be to just lower the ceiling using dirt, cobblestone, etc. so that there is only a 1-block high area containing your redstone circuitry. –  gnovice Jun 12 '12 at 18:59
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@SaiBechan: A step beyond that, use sticky pistons to lower the ceiling by one. That is why you have a slime farm, right? –  MBraedley Jun 12 '12 at 20:00
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