Do you have to have a roof on a slime farm i have found a slime chunk via chunkbase and we dug out and there is no slimes spawning, we have also light up caves we found around.
No it doesn't need a roof. Slimes will only spawn below Y=40 in the chunk though. You need to light up caves within an 128 block sphere of where you will stand at the slime farm and you need to stand 24 blocks away from the spawning floors. It sounds like you're playing on multiplayer. This will make the farm less productive because mobs will be spawning around the other players on the server and filling up the mob cap. Especially since slimes are a rarer spawn than skeletons, zombies and creepers.
Do you have to have a roof on a slime farm i have found a slime chunk via chunkbase and we dug out and there is no slimes spawning, we have also light up caves we found around.
No it doesn't need a roof. Slimes will only spawn below Y=40 in the chunk though. You need to light up caves within an 128 block sphere of where you will stand at the slime farm and you need to stand 24 blocks away from the spawning floors. It sounds like you're playing on multiplayer. This will make the farm less productive because mobs will be spawning around the other players on the server and filling up the mob cap. Especially since slimes are a rarer spawn than skeletons, zombies and creepers.
by c0yote
I tried it with terrible results. I gave my wife my glasses for a second, a creeper showed up and now my wife is pregnant.
Stupid 3D..
So i tried making a roof but still the spawnrate is minimal. The Y for the roof is 37 so you say i should stand at y=61
You should try to find a swamp.
What I recommend for slime farming is making sure there are water sources in the farm zone. For me, that seems to up the chances of slime spawnage.