diff --git a/src/main/java/biomesoplenty/common/biome/nether/CrystallineChasmBiome.java b/src/main/java/biomesoplenty/common/biome/nether/CrystallineChasmBiome.java
index be89a7794..ca3526404 100644
--- a/src/main/java/biomesoplenty/common/biome/nether/CrystallineChasmBiome.java
+++ b/src/main/java/biomesoplenty/common/biome/nether/CrystallineChasmBiome.java
@@ -9,11 +9,9 @@ import net.minecraft.block.Blocks;
 import net.minecraft.client.audio.BackgroundMusicTracks;
 import net.minecraft.entity.EntityClassification;
 import net.minecraft.entity.EntityType;
+import net.minecraft.particles.ParticleTypes;
 import net.minecraft.util.SoundEvents;
-import net.minecraft.world.biome.BiomeAmbience;
-import net.minecraft.world.biome.DefaultBiomeFeatures;
-import net.minecraft.world.biome.MoodSoundAmbience;
-import net.minecraft.world.biome.SoundAdditionsAmbience;
+import net.minecraft.world.biome.*;
 import net.minecraft.world.gen.GenerationStage;
 import net.minecraft.world.gen.carver.WorldCarver;
 import net.minecraft.world.gen.feature.Feature;
@@ -30,7 +28,7 @@ public class CrystallineChasmBiome extends NetherBiomeBOP
 {
     public CrystallineChasmBiome()
     {
-        super((new Builder()).surfaceBuilder(SurfaceBuilder.NETHER, SurfaceBuilder.CONFIG_HELL).precipitation(RainType.NONE).biomeCategory(Category.NETHER).depth(0.1F).scale(0.2F).temperature(2.0F).downfall(0.0F).specialEffects((new BiomeAmbience.Builder()).waterColor(4159204).waterFogColor(329011).fogColor(0x59002C).ambientLoopSound(SoundEvents.AMBIENT_WARPED_FOREST_LOOP).ambientMoodSound(new MoodSoundAmbience(SoundEvents.AMBIENT_CRIMSON_FOREST_MOOD, 6000, 8, 2.0D)).ambientAdditionsSound(new SoundAdditionsAmbience(SoundEvents.AMBIENT_NETHER_WASTES_ADDITIONS, 0.0111D)).backgroundMusic(BackgroundMusicTracks.createGameMusic(SoundEvents.MUSIC_BIOME_NETHER_WASTES)).build()).parent((String)null).optimalParameters(ImmutableList.of(new Attributes(0.0F, 1.0F, 0.0F, 0.0F, 0.0F))));
+        super((new Builder()).surfaceBuilder(SurfaceBuilder.NETHER, SurfaceBuilder.CONFIG_HELL).precipitation(RainType.NONE).biomeCategory(Category.NETHER).depth(0.1F).scale(0.2F).temperature(2.0F).downfall(0.0F).specialEffects((new BiomeAmbience.Builder()).waterColor(4159204).waterFogColor(329011).fogColor(0x59002C).ambientParticle(new ParticleEffectAmbience(ParticleTypes.INSTANT_EFFECT, 0.001785F)).ambientLoopSound(SoundEvents.AMBIENT_CRIMSON_FOREST_LOOP).ambientMoodSound(new MoodSoundAmbience(SoundEvents.AMBIENT_BASALT_DELTAS_MOOD, 6000, 8, 2.0D)).ambientAdditionsSound(new SoundAdditionsAmbience(SoundEvents.AMBIENT_BASALT_DELTAS_ADDITIONS, 0.0111D)).backgroundMusic(BackgroundMusicTracks.createGameMusic(SoundEvents.MUSIC_BIOME_NETHER_WASTES)).build()).parent((String)null).optimalParameters(ImmutableList.of(new Attributes(0.0F, 1.0F, 0.0F, 0.0F, 0.0F))));
 
         //Terrain
         this.addStructureStart(DefaultBiomeFeatures.RUINED_PORTAL_NETHER);
diff --git a/src/main/java/biomesoplenty/common/biome/nether/ShadowlandsBiome.java b/src/main/java/biomesoplenty/common/biome/nether/ShadowlandsBiome.java
index 149ebc419..051549156 100644
--- a/src/main/java/biomesoplenty/common/biome/nether/ShadowlandsBiome.java
+++ b/src/main/java/biomesoplenty/common/biome/nether/ShadowlandsBiome.java
@@ -10,6 +10,7 @@ import net.minecraft.block.Blocks;
 import net.minecraft.client.audio.BackgroundMusicTracks;
 import net.minecraft.entity.EntityClassification;
 import net.minecraft.entity.EntityType;
+import net.minecraft.particles.ParticleTypes;
 import net.minecraft.util.SoundEvents;
 import net.minecraft.world.biome.*;
 import net.minecraft.world.gen.GenerationStage;
@@ -28,7 +29,7 @@ public class ShadowlandsBiome extends NetherBiomeBOP
 {
     public ShadowlandsBiome()
     {
-        super((new Builder()).surfaceBuilder(BOPBiomeFeatures.SHADOWLANDS_SURFACE_BUILDER, BOPBiomeFeatures.BLACKSTONE_SURFACE).precipitation(RainType.NONE).biomeCategory(Category.NETHER).depth(0.1F).scale(0.2F).temperature(2.0F).downfall(0.0F).specialEffects((new BiomeAmbience.Builder()).waterColor(4159204).waterFogColor(329011).fogColor(0x030205).ambientLoopSound(SoundEvents.AMBIENT_WARPED_FOREST_LOOP).ambientMoodSound(new MoodSoundAmbience(SoundEvents.AMBIENT_CRIMSON_FOREST_MOOD, 6000, 8, 2.0D)).ambientAdditionsSound(new SoundAdditionsAmbience(SoundEvents.AMBIENT_NETHER_WASTES_ADDITIONS, 0.0111D)).backgroundMusic(BackgroundMusicTracks.createGameMusic(SoundEvents.MUSIC_BIOME_NETHER_WASTES)).build()).parent((String)null).optimalParameters(ImmutableList.of(new Attributes(0.0F, 1.0F, 0.0F, 0.0F, 0.0F))));
+        super((new Builder()).surfaceBuilder(BOPBiomeFeatures.SHADOWLANDS_SURFACE_BUILDER, BOPBiomeFeatures.BLACKSTONE_SURFACE).precipitation(RainType.NONE).biomeCategory(Category.NETHER).depth(0.1F).scale(0.2F).temperature(2.0F).downfall(0.0F).specialEffects((new BiomeAmbience.Builder()).waterColor(4159204).waterFogColor(329011).fogColor(0x030205).ambientParticle(new ParticleEffectAmbience(ParticleTypes.SMOKE, 0.00357F)).ambientLoopSound(SoundEvents.AMBIENT_SOUL_SAND_VALLEY_LOOP).ambientMoodSound(new MoodSoundAmbience(SoundEvents.AMBIENT_SOUL_SAND_VALLEY_MOOD, 6000, 8, 2.0D)).backgroundMusic(BackgroundMusicTracks.createGameMusic(SoundEvents.MUSIC_BIOME_BASALT_DELTAS)).build()).parent((String)null).optimalParameters(ImmutableList.of(new Attributes(0.0F, 1.0F, 0.0F, 0.0F, 0.0F))));
 
         //Terrain
         this.addStructureStart(DefaultBiomeFeatures.RUINED_PORTAL_NETHER);
diff --git a/src/main/java/biomesoplenty/common/biome/nether/VisceralHeapBiome.java b/src/main/java/biomesoplenty/common/biome/nether/VisceralHeapBiome.java
index 197df3f0e..6f1b7502a 100644
--- a/src/main/java/biomesoplenty/common/biome/nether/VisceralHeapBiome.java
+++ b/src/main/java/biomesoplenty/common/biome/nether/VisceralHeapBiome.java
@@ -53,9 +53,8 @@ public class VisceralHeapBiome extends NetherBiomeBOP
         //Entities
         this.addSpawn(EntityClassification.MONSTER, new SpawnListEntry(EntityType.GHAST, 50, 4, 4));
         this.addSpawn(EntityClassification.MONSTER, new SpawnListEntry(EntityType.ZOMBIFIED_PIGLIN, 100, 4, 4));
-        this.addSpawn(EntityClassification.MONSTER, new SpawnListEntry(EntityType.PIGLIN, 15, 4, 4));
         this.addSpawn(EntityClassification.CREATURE, new SpawnListEntry(EntityType.STRIDER, 60, 1, 2));
-        this.addSpawn(EntityClassification.CREATURE, new Biome.SpawnListEntry(EntityType.SKELETON_HORSE, 1, 1, 1));
+        this.addSpawn(EntityClassification.CREATURE, new Biome.SpawnListEntry(EntityType.SKELETON_HORSE, 15, 1, 1));
 
         this.addWeight(BOPClimates.NETHER, 10);
     }