ok so I have not played normal Minecraft in about 6 years and don't know what I'm doing wrong I made a mob farm out of cobblestone with 2 levels and 4 water paths on each level to make the mobs fall down the spawner My base is 72 blocks away from the spawner and there is no light inside of it. I have lit up all the land around the spawner and the caves underground. Each level of the mob farm is 3 blocks high to allow all mob types to spawn there. the roof is also lit up and the floors are made of solid blocks [not slabs or anything like that]. At this point I have no idea why mobs wont spawn in it.
To mobproof the area you need to have have lit up (almost) all the caves within 128 blocks of where you are (not the position of the spawner).
Use the debug screen <F3> to see how many mobs there are in the area, the fifth line, starting with "E:" is entities, including mobs, the first number is entities in your field of view (even if they are hidden) and the second is total entities, if the second number is high while the spawner is empty you need to find them and eliminate them if they are hostile mobs.
Slabs work fine as long as they are in the top of their blockspace, as do upside down stairs.
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I presume you have checked that mobs aren't spawning, not just that they don't fall into the water?
ok so I have not played normal Minecraft in about 6 years and don't know what I'm doing wrong I made a mob farm out of cobblestone with 2 levels and 4 water paths on each level to make the mobs fall down the spawner My base is 72 blocks away from the spawner and there is no light inside of it. I have lit up all the land around the spawner and the caves underground. Each level of the mob farm is 3 blocks high to allow all mob types to spawn there. the roof is also lit up and the floors are made of solid blocks [not slabs or anything like that]. At this point I have no idea why mobs wont spawn in it.
To mobproof the area you need to have have lit up (almost) all the caves within 128 blocks of where you are (not the position of the spawner).
Use the debug screen <F3> to see how many mobs there are in the area, the fifth line, starting with "E:" is entities, including mobs, the first number is entities in your field of view (even if they are hidden) and the second is total entities, if the second number is high while the spawner is empty you need to find them and eliminate them if they are hostile mobs.
Slabs work fine as long as they are in the top of their blockspace, as do upside down stairs.
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I presume you have checked that mobs aren't spawning, not just that they don't fall into the water?
Just testing.