You need to wait for them to spawn higher up in the air because there is only a certain amount of mobs that can be spawned at a time and mobs spawning in caves lower the rates of your farm. Just make a platform 100 or so blocks in the air and afk there and they will spawn then you can go down and kill them or whatever

You can light up all the nearby caves, but since its a mob grinder, depending on what loot you want, xp and drops or just xp, you can either afk 114 blocks up and make a trident killer for bedrock edition, but if you want xp your going to want to light up the nearby area for the best results and sit at the killing area and maybe put on an auto clicker, sorry if its a bad explanation

These types of grinders/farms are notoriously hard to get good production out of. If you can find an actual spawner and turn it into an xp farm, you’ll get a lot better results.

You could probably use /random value and assign a number for ever mob. And then you could run that multiple times and use two different functions for spawning regular and hard mobs. Then you could run those functions in the ratio you like to get a mix.

!faq(randomnumber)

Make it 3 blocks high above water for them to drop in and move

/give @p minecraft:spawner{BlockEntityTag:{SpawnData:{id:"minecraft:zombie"}}} 1

Just go into the creative inventory and get the unactive mob spawner and the spawn egg of your mob of choice. Place the spawner then use the egg on it.

That depends on what server you are on. Some servers work with claims, and you can only place them within your own.

But if you are able to place them, have a pickaxe with silk touch at hand, to be able to remove them again.

Consider what you want to do with them. Exp farm? Mob fighting arena? Traps?

like, on a server? the actual block or a egg?

if you place it and put a spawn egg in it it will spawn that mob

Mobs need light level 7 or below. The darker it is, the more likely they are to spawn. Specifically, each attempt has a light level / 8 chance of failing

Redstone torches only give off light level 7, so they aren't enough to stop spawning. If you want to spawnproof a dark area, you can recess the lights somewhat (like hiding them a couple blocks behind pistons, leaves or water). You can also use slabs or stairs because mobs can't spawn on them regardless of light level

If I recall correctly, you need a light level of 7 or below for mobs to spawn. I believe redstone torches are light level 3

Redstone torches aren’t enough to stop spawns unfortunately since they’re lower than light level 7

The requirement that mobs need total darkness (block light) to spawn was only added in 1.18, all previous versions allow them to spawn in light level 7 and below (the chance of a spawn attempt failing is light/8, so 7, which is what a redstone torch emits, may seem to stop spawns - until one happens to pass the 1/8 chance).

im no expert but if i remember correctly mob spawners spawn mobs 4 blocks out in every direction so spreading them out would probably be better

I believe spawners pick a random set of blocks within its radius for its spawn interval. For each one that is already occupied by a block or something else the spawn is skipped. As this also includes mobs, you want to clear those from the area asap as well.

So for optimal efficiency you want to clear out as much space around the spawners while still maintaining as many spawners as you can while allowing mobs to move away quickly. Someone already mentioned pillars which is probably the right idea. This gives most spacing area while still utilizing a lot of spawners and allowing mobs to just be cleared out by gravity.

But remember, you do you. This is modded so you can't really go wrong lol.

No, assuming those are vanilla spawners its terrible; vanilla spawners can spawn up to 4 mobs per cycle, but will not spawn their mob if it detects 6 of its type of mob in a 9x9x9 cube (in Java) centered around the spawner.

So especially with your plan to use water which is slow af, more than 2-3 spawners of the same type is enough for them to start 'clogging', preventing spawns until the mobs are out of that 9x9x9 cube.

bad . . . best way to do it is split them in to a 2x2 pillers in different chunks to avoid the spawn cap

Build 4 pillars with 4 blocks space between them.

You can't get spawners in survival.

Don’t break it

/give @p mob_spawner 1 0

It's not in the creative inventory. You would need to do a command like /give player spawner 1

Find a spawner in the world, and build your farm locally on site.

Oh ok well that’s too bad