Spread of corruption question

[Jeff]

I was wondering what the minimum requirement for a vertical or horizontal gap to prevent the spread of corruption is. I'm creating a world for expert hard mode that has a fishing spot in every biome. I'd like to separate them by barriers and am not interested in extensive use of the gun that spews biome juice (clentaminator or something?).
https://steamcommunity.com/sharedfiles/filedetails/?id=1725231631
This is what I have been doing, my goal is to do the bare minimum possible to prevent the spread of hallow/corruption. Any tips? Is this basically what is needed?

I read somewhere that it can go 10 down and maybe only 3 up & across if you block it with a material like wood or glass.

Also, can walls carry the spread of corruption/hallow?

[Meep]

I am pretty sure that evil biomes do not spread through walls. And I am also sure that you need a minimum 6 block gap to stop the hallow/corruption from coming over. Just to be safe make it a 7 block wide. If it does somehow spread over the walls just remove the walls and clense the area you wanted to protect in the first place. Hope this helped a tad

[Jeff]

Is it 6/7 wide if there is no resistant material and less if there is a resistant material? Otherwise there would be no point in using wood. I was just placing wood at the gaps like shown in the pic so it is effectively 7 wide at the cave entrances which I hope is all I need.

I just didn't want to make huge hellivators because there are some fishing spots right up against the wall already.

[Meep]

Originally posted by ysnyder77:

Is it 6/7 wide if there is no resistant material and less if there is a resistant material? Otherwise there would be no point in using wood. I was just placing wood at the gaps like shown in the pic so it is effectively 7 wide at the cave entrances which I hope is all I need.

I just didn't want to make huge hellivators because there are some fishing spots right up against the wall already.

I believe you dont need to even fill the gaps with a non corruptable material. The evil source should just sit on the other side not being able to cross the gap

[Saver Sigonith]

https://terraria.gamepedia.com/The_Corruption
Corruption/Crimson/Hallow have a spread range of 3 blocks. They can spread across corruptible tiles, uncorruptible tiles or air within this radius. However, vines and thorns can grow father than that (6 blocks) and spread corruption/crimson/hallow as well.
So the best way to block them off for sure is make a gap at least 3 blocks wide, and block off the sides with uncorruptible tiles. If you're far enough underground that grass can't grow, you don't have to block off the sides.

[Jeff]

I guess I'll turn on a depth meter and try 6 blocks for surface, and as soon as depth meter hits 0 or -1 I'll switch to 3 blocks and see if that actually works. Maybe place down a sunflower at each edge with grass.

I used 3 blocks on my last world and it wasn't enough. It crossed multiple times in multiple places. I got tired of fighting it because it spread so fast.

I cut through a combination of dirt/stone mostly, but there is some mud/sand/clay and whatever else. Dirt & stone seems the most corruptible but it depends on the biome.

[[кит] akrhann]

Would you like any help excavating?

[Isiforo.s]

This has nothing to do with the topic, sorry but I'd like to ask here rather than opening a new thread. Can Zombies destroy doors after a while? I can't remember any more.

[Jeff]

Originally posted by Akrhann™:

Would you like any help excavating?

No thanks, I'm kind of a loner when I play this particular game. I just treat it as a solo game for some reason.

I believe zombies can either open or destroy doors (I forget which) on blood moon. I usually build above ground and have the entrance be vertical from the bottom with rope. This keeps everything out except for the wandering eye, which is kept out only 99% of the time with a few wood tiles.

[b_rigid]

you need 4 block gaps.

corruption and hallow can spread through some walls so you either need to break the walls or fill the gaps with wood, which biomes can't spread through.

[JRICH0724]

6

[t0my]

If you wanna get a easy way out just grave a clentaminator with hollow solution and make the whole world hollow for those sick rainbows

[Electro Spaghetti]

https://steamcommunity.com/sharedfiles/filedetails/?id=1520772282
it can spread through walls, but only a certain amount away from corrupted blocks, as shown above. Also, it can't transfer from walls to blocks, so there is no need to worry.
I made a 3 block wide tunnel with uncorruptable walls, which (5 block gap) has been enough to contain it.
Hope this helps! ^^

[Saver Sigonith]

Originally posted by ysnyder77:

I cut through a combination of dirt/stone mostly, but there is some mud/sand/clay and whatever else. Dirt & stone seems the most corruptible but it depends on the biome.

Just to clarify, corruptible blocks are:
Grass*
Stone
Sand
Hardened Sand
Sandstone
Ice
Mud**
Jungle Grass**
Jungle Thorns**

*(Grass but not dirt! Meaning underground dirt is uncorruptible.)
**(Crimson/Corruption only.)

All other blocks are uncorruptible. This means wood, clay, glass, any brick, etc. are safe to block off vines with.

[cee]

Hallow spreads through walls and Corruption probably doesnt

[Saver Sigonith]

Originally posted by marlon.werdekker:

Hallow spreads through walls and Corruption probably doesnt

As I've said before, everything spreads through walls within a 3 block radius. That's the rule. Walls have no effect on that, but they DO block vines/thorns.