So you need a lot of light emitting blocks at multiple heights to stop them spawning, unless you remove the water of course.
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According to the Wiki in ocean biomes they don't spawn in the upper 5 blocks below sea level.
So if you don't want to go deep sea diving you could put a layer of glass or something 5 blocks down and have a natural looking ocean with no drowned coming up to attack you.
The main alteration in the wiki described behavior since the last post in that thread (Aug18) appears to be "In ocean biomes, drowned will only spawn at a height less than 5 blocks below sea level; this restriction does not apply to rivers."
Slabbing or lighting the bottom is effective in comparatively shallow water, but ineffective in deep water.
To actually render a volume of deep water safe the best method still appears to be a combination of:
Fencing:
bottom to surface+1 fences (with the top 3 layers walls to protect from lightning damage)
and
Lighting:
Setting jack-o-lanterns/sea lanterns/glowstone in a grid four apart
diagonally will protect a volume five layers high; two above to two
below the light sources, with the appearance of 7-light blocks in the
third layers centered between the lights. The grid would need to be
repeated every fifth layer to avoid any spawnable waterblocks.
[I have since hit on placing the top layer @61 (ie submerged by one block) and counting down toward the bottom which preseves the ability to jump into any part of the pool.
Some additional lights may be needed in steep areas (where Y is cahnging quickly).
The result is (as expected) quite obtrusive; assuming one had them in sufficient quanity, end rods would be considerably less so… (Zero tick chorus fruit farms fix half of that, but I am aware of now equivalent for blaze rods…)]
[The greater spacing of lights with alternate layers offset mentioned was tested and proved effective, however the savings in materials (minor) was insufficient to justify the increased complexity and time required to contruct.]
If changes since that thread went dormant have introduced a better way of spawn proofing (other than placing a matrix of cats, the potential teleporting of which make this insufficiently sure for my tastes), I would be pleased to learn of it.
Rollback Post to RevisionRollBack
"Why does everything have to be so stoopid?" Harvey Pekar (from American Splendor)
WARNING: I have an extemely "grindy" playstyle; YMMV — if this doesn't seem fun to you, mine what you can from it & bin the rest.
This is my idea: put magma on the bottom of the sea , they always walk on the bottom.
And are killed by it!
Yes that sounds like a good solution if you want to get rid of them to open up the mob cap.
(Not so good if you want to use the ocean itself for anything.)
It would take a lot of magma.
It would be interesting to hear about your results.
And how much of the sea floor you needed to cover.
I expect that every other block would work as well as every block as long as you filled in the gaps with something else so the drowned didn't get stuck between magma blocks.
But would every 10:th block be enough?
And do they spawn in the bubble columns or only inbetween?
Or it can spawn in the middle of water? Can I use slabs to prevent it to spawn?
They spawn in the middle of the water.
So you need a lot of light emitting blocks at multiple heights to stop them spawning, unless you remove the water of course.
--
According to the Wiki in ocean biomes they don't spawn in the upper 5 blocks below sea level.
So if you don't want to go deep sea diving you could put a layer of glass or something 5 blocks down and have a natural looking ocean with no drowned coming up to attack you.
https://minecraft.gamepedia.com/Drowned
Just testing.
Drowned will spawn in mid water (on of the mistakes in their implementaion IMO).
See Drowned-proofing techniques wanted… for a discussion (last spring-summer) of possible techniques for drowned-proofing.
The main alteration in the wiki described behavior since the last post in that thread (Aug18) appears to be "In ocean biomes, drowned will only spawn at a height less than 5 blocks below sea level; this restriction does not apply to rivers."
Slabbing or lighting the bottom is effective in comparatively shallow water, but ineffective in deep water.
To actually render a volume of deep water safe the best method still appears to be a combination of:
Fencing:
and
Lighting:
diagonally will protect a volume five layers high; two above to two
below the light sources, with the appearance of 7-light blocks in the
third layers centered between the lights. The grid would need to be
repeated every fifth layer to avoid any spawnable waterblocks.
[The greater spacing of lights with alternate layers offset mentioned was tested and proved effective, however the savings in materials (minor) was insufficient to justify the increased complexity and time required to contruct.]
If changes since that thread went dormant have introduced a better way of spawn proofing (other than placing a matrix of cats, the potential teleporting of which make this insufficiently sure for my tastes), I would be pleased to learn of it.
This is my idea: put magma on the bottom of the sea , they always walk on the bottom.
I just create a Creeper farm and found it below the deep sea after finish it. so I can't find any crepper and try to find a way to fix it.
And are killed by it!
Yes that sounds like a good solution if you want to get rid of them to open up the mob cap.
(Not so good if you want to use the ocean itself for anything.)
It would take a lot of magma.
It would be interesting to hear about your results.
And how much of the sea floor you needed to cover.
I expect that every other block would work as well as every block as long as you filled in the gaps with something else so the drowned didn't get stuck between magma blocks.
But would every 10:th block be enough?
And do they spawn in the bubble columns or only inbetween?
Just testing.
result: I got a lot of dead fish and a little Drowned.
some drowned will avoid the magma block.