diff --git a/src/main/java/org/betterx/bclib/api/biomes/BCLBiome.java b/src/main/java/org/betterx/bclib/api/biomes/BCLBiome.java
index 172d7e2a..9cabf79f 100644
--- a/src/main/java/org/betterx/bclib/api/biomes/BCLBiome.java
+++ b/src/main/java/org/betterx/bclib/api/biomes/BCLBiome.java
@@ -27,7 +27,7 @@ import java.util.function.Consumer;
 import org.jetbrains.annotations.Nullable;
 
 public class BCLBiome extends BCLBiomeSettings {
-    private final Set<TagKey<Biome>> structureTags = Sets.newHashSet();
+    private final Set<TagKey<Biome>> biomeTags = Sets.newHashSet();
     private final WeightedList<BCLBiome> subbiomes = new WeightedList<>();
     private final Map<String, Object> customData = Maps.newHashMap();
     private final ResourceLocation biomeID;
@@ -200,7 +200,7 @@ public class BCLBiome extends BCLBiomeSettings {
      */
     void afterRegistration() {
         ResourceKey<Biome> key = BuiltinRegistries.BIOME.getResourceKey(getBiome()).orElseThrow();
-        this.structureTags.forEach(tagKey -> TagAPI.addBiomeTag(tagKey, biome));
+        this.biomeTags.forEach(tagKey -> TagAPI.addBiomeTag(tagKey, biome));
 
         if (this.surfaceInit != null) {
             surfaceInit.accept(key);
@@ -280,8 +280,8 @@ public class BCLBiome extends BCLBiomeSettings {
      * Adds structures to this biome. For internal use only.
      * Used inside {@link BCLBiomeBuilder}.
      */
-    void attachStructures(List<TagKey<Biome>> structures) {
-        structureTags.addAll(structures);
+    void addBiomeTags(Set<TagKey<Biome>> tags) {
+        biomeTags.addAll(tags);
     }
 
     /**
diff --git a/src/main/java/org/betterx/bclib/api/biomes/BCLBiomeBuilder.java b/src/main/java/org/betterx/bclib/api/biomes/BCLBiomeBuilder.java
index 11615c00..474a7157 100644
--- a/src/main/java/org/betterx/bclib/api/biomes/BCLBiomeBuilder.java
+++ b/src/main/java/org/betterx/bclib/api/biomes/BCLBiomeBuilder.java
@@ -28,6 +28,7 @@ import net.minecraft.world.level.levelgen.placement.PlacedFeature;
 import net.fabricmc.fabric.api.biome.v1.BiomeModifications;
 
 import com.google.common.collect.Lists;
+import com.google.common.collect.Sets;
 import org.betterx.bclib.api.surface.SurfaceRuleBuilder;
 import org.betterx.bclib.entity.BCLEntityWrapper;
 import org.betterx.bclib.mixin.common.BiomeGenerationSettingsAccessor;
@@ -41,6 +42,7 @@ import org.betterx.bclib.world.structures.BCLStructure;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
+import java.util.Set;
 import java.util.function.BiFunction;
 import java.util.function.Consumer;
 
@@ -53,7 +55,6 @@ public class BCLBiomeBuilder {
     private static final SurfaceRules.ConditionSource SURFACE_NOISE = SurfaceRules.noiseCondition(Noises.SOUL_SAND_LAYER,
                                                                                                   -0.012);
 
-    private final List<TagKey<Biome>> structureTags = new ArrayList<>(8);
     private final List<Pair<GenerationStep.Carving, Holder<? extends ConfiguredWorldCarver<?>>>> carvers = new ArrayList<>(
             1);
     private BiomeGenerationSettings.Builder generationSettings;
@@ -63,6 +64,8 @@ public class BCLBiomeBuilder {
     private Precipitation precipitation;
     private ResourceLocation biomeID;
 
+    private Set<TagKey<Biome>> tags = Sets.newHashSet();
+
     private final List<Climate.ParameterPoint> parameters = Lists.newArrayList();
 
     //BiomeTags.IS_NETHER
@@ -88,7 +91,6 @@ public class BCLBiomeBuilder {
         INSTANCE.generationSettings = null;
         INSTANCE.effectsBuilder = null;
         INSTANCE.spawnSettings = null;
-        INSTANCE.structureTags.clear();
         INSTANCE.temperature = 1.0F;
         INSTANCE.fogDensity = 1.0F;
         INSTANCE.edgeSize = 0;
@@ -99,6 +101,7 @@ public class BCLBiomeBuilder {
         INSTANCE.edge = null;
         INSTANCE.carvers.clear();
         INSTANCE.parameters.clear();
+        INSTANCE.tags.clear();
         return INSTANCE;
     }
 
@@ -590,7 +593,7 @@ public class BCLBiomeBuilder {
      * @return same {@link BCLBiomeBuilder} instance.
      */
     public BCLBiomeBuilder structure(TagKey<Biome> structureTag) {
-        structureTags.add(structureTag);
+        tags.add(structureTag);
         return this;
     }
 
@@ -670,6 +673,13 @@ public class BCLBiomeBuilder {
         return this;
     }
 
+    public BCLBiomeBuilder tag(TagKey<Biome>... tag) {
+        for (TagKey<Biome> t : tag) {
+            tags.add(t);
+        }
+        return this;
+    }
+
     /**
      * Set terrain height for the biome. Can be used in custom generators, doesn't change vanilla biome distribution or generation.
      *
@@ -755,7 +765,7 @@ public class BCLBiomeBuilder {
 
         final Biome biome = builder.build();
         final T res = biomeConstructor.apply(biomeID, biome, settings);
-        res.attachStructures(structureTags);
+        res.addBiomeTags(tags);
         res.setSurface(surfaceRule);
         res.addClimateParameters(parameters);
 
diff --git a/src/main/java/org/betterx/bclib/api/biomes/BiomeAPI.java b/src/main/java/org/betterx/bclib/api/biomes/BiomeAPI.java
index 35dc9372..2ef82798 100644
--- a/src/main/java/org/betterx/bclib/api/biomes/BiomeAPI.java
+++ b/src/main/java/org/betterx/bclib/api/biomes/BiomeAPI.java
@@ -169,6 +169,7 @@ public class BiomeAPI {
      */
     public static void initRegistry(Registry<Biome> biomeRegistry) {
         if (biomeRegistry != BiomeAPI.biomeRegistry) {
+            System.out.println("Switching Registry to " + biomeRegistry);//17015, 19009, 19058, 19009
             BiomeAPI.biomeRegistry = biomeRegistry;
             CLIENT.clear();
         }
@@ -420,11 +421,20 @@ public class BiomeAPI {
      * @return biome {@link ResourceLocation}.
      */
     public static ResourceLocation getBiomeID(Biome biome) {
-        ResourceLocation id = BuiltinRegistries.BIOME.getKey(biome);
-        if (id == null && biomeRegistry != null) {
+        ResourceLocation id = null;
+        if (biomeRegistry != null) {
             id = biomeRegistry.getKey(biome);
         }
-        return id == null ? EMPTY_BIOME.getID() : id;
+        if (id == null) {
+            id = BuiltinRegistries.BIOME.getKey(biome);
+        }
+
+        if (id == null) {
+            BCLib.LOGGER.error("Unable to get ID for " + biome + ". Falling back to empty Biome...");
+            id = EMPTY_BIOME.getID();
+        }
+
+        return id;
     }
 
     /**