@Paul2001 Hi!
i would like to make a mob grinder under the sea but i don t know the good distance to build next my house island ;(
thx !

Always go further than ATLEAST 35k.

Fair warning, any overworld mob grinder that doesn't use a spawner is going to have terrible rates on the server. We're talking like 1 drop every 10 minutes if you're lucky. It's probably not worth your time and effort.