So on the server I'm playing on passive mobs don't seem to spawn near any of the towns. So I wanted to build a public mob farm that we could use to get items. So I dug underground and filled the floor with grass and put light everywhere but nothing is spawning. Right now the room is only 26x26 so is it too small? Should I just rebuild it again except this time make it underwater? I could understand if I was getting very little spawns but I haven't gotten any. Any suggestions?
What you could do is trap some passive mobs, breed them, and then have it so the extra mobs fall off the ledge and die... thta might work as a mob trap...?
Passive Mob Farm