diff --git a/src/main/java/biomesoplenty/common/biome/overworld/BogBiome.java b/src/main/java/biomesoplenty/common/biome/overworld/BogBiome.java
index ac2754069..4ada71fad 100644
--- a/src/main/java/biomesoplenty/common/biome/overworld/BogBiome.java
+++ b/src/main/java/biomesoplenty/common/biome/overworld/BogBiome.java
@@ -57,11 +57,11 @@ public class BogBiome extends BiomeBOP
         // Vegetation
         this.addFeature(GenerationStage.Decoration.VEGETAL_DECORATION, Feature.RANDOM_SELECTOR.configured(new MultipleRandomFeatureConfig(ImmutableList.of(BOPBiomeFeatures.SPRUCE_TWIGLET_TREE.configured(DefaultBiomeFeatures.NORMAL_TREE_CONFIG).weighted(0.4F), BOPBiomeFeatures.MAPLE_TWIGLET_TREE.configured(DefaultBiomeFeatures.NORMAL_TREE_CONFIG).weighted(0.6F)), BOPBiomeFeatures.TWIGLET_TREE.configured(DefaultBiomeFeatures.NORMAL_TREE_CONFIG))).decorated(Placement.COUNT_EXTRA_HEIGHTMAP.configured(new AtSurfaceWithExtraConfig(5, 0.4F, 1))));
 
-        this.addFeature(GenerationStage.Decoration.VEGETAL_DECORATION, new StandardGrassFeature(NoFeatureConfig::deserialize).configured(IFeatureConfig.NONE).decorated(Placement.COUNT_HEIGHTMAP_DOUBLE.configured(new FrequencyConfig(8))));
-        this.addFeature(GenerationStage.Decoration.VEGETAL_DECORATION, Feature.RANDOM_PATCH.configured(DefaultBiomeFeatures.SWEET_BERRY_BUSH_CONFIG).decorated(Placement.COUNT_HEIGHTMAP_DOUBLE.configured(new FrequencyConfig(25))));
-        this.addFeature(GenerationStage.Decoration.VEGETAL_DECORATION, Feature.RANDOM_PATCH.configured(BiomeFeatureHelper.createClusterConfigurationDoubleWater(BOPBlocks.reed.defaultBlockState())).decorated(Placement.COUNT_HEIGHTMAP_DOUBLE.configured(new FrequencyConfig(35))));
-        this.addFeature(GenerationStage.Decoration.VEGETAL_DECORATION, Feature.RANDOM_PATCH.configured(BiomeFeatureHelper.createClusterConfigurationDoubleWater(BOPBlocks.watergrass.defaultBlockState())).decorated(Placement.COUNT_HEIGHTMAP_DOUBLE.configured(new FrequencyConfig(15))));
-        this.addFeature(GenerationStage.Decoration.VEGETAL_DECORATION, Feature.RANDOM_PATCH.configured(BiomeFeatureHelper.createClusterConfiguration(BOPBlocks.bush.defaultBlockState())).decorated(Placement.COUNT_HEIGHTMAP_DOUBLE.configured(new FrequencyConfig(200))));
+        this.addFeature(GenerationStage.Decoration.VEGETAL_DECORATION, new StandardGrassFeature(NoFeatureConfig::deserialize).configured(IFeatureConfig.NONE).decorated(Placement.COUNT_HEIGHTMAP_DOUBLE.configured(new FrequencyConfig(15))));
+        this.addFeature(GenerationStage.Decoration.VEGETAL_DECORATION, Feature.RANDOM_PATCH.configured(DefaultBiomeFeatures.SWEET_BERRY_BUSH_CONFIG).decorated(Placement.COUNT_HEIGHTMAP_DOUBLE.configured(new FrequencyConfig(10))));
+        this.addFeature(GenerationStage.Decoration.VEGETAL_DECORATION, Feature.RANDOM_PATCH.configured(BiomeFeatureHelper.createClusterConfigurationDoubleWater(BOPBlocks.reed.defaultBlockState())).decorated(Placement.COUNT_HEIGHTMAP_DOUBLE.configured(new FrequencyConfig(25))));
+        this.addFeature(GenerationStage.Decoration.VEGETAL_DECORATION, Feature.RANDOM_PATCH.configured(BiomeFeatureHelper.createClusterConfigurationDoubleWater(BOPBlocks.watergrass.defaultBlockState())).decorated(Placement.COUNT_HEIGHTMAP_DOUBLE.configured(new FrequencyConfig(10))));
+        this.addFeature(GenerationStage.Decoration.VEGETAL_DECORATION, Feature.RANDOM_PATCH.configured(BiomeFeatureHelper.createClusterConfiguration(BOPBlocks.bush.defaultBlockState())).decorated(Placement.COUNT_HEIGHTMAP_DOUBLE.configured(new FrequencyConfig(50))));
         this.addFeature(GenerationStage.Decoration.VEGETAL_DECORATION, Feature.RANDOM_PATCH.configured(BiomeFeatureHelper.createClusterConfiguration(Blocks.BROWN_MUSHROOM.defaultBlockState())).decorated(Placement.CHANCE_HEIGHTMAP_DOUBLE.configured(new ChanceConfig(15))));
         this.addFeature(GenerationStage.Decoration.VEGETAL_DECORATION, Feature.RANDOM_PATCH.configured(BiomeFeatureHelper.createClusterConfiguration(Blocks.RED_MUSHROOM.defaultBlockState())).decorated(Placement.CHANCE_HEIGHTMAP_DOUBLE.configured(new ChanceConfig(8))));
         this.addFeature(GenerationStage.Decoration.VEGETAL_DECORATION, Feature.RANDOM_PATCH.configured(BiomeFeatureHelper.createClusterConfiguration(BOPBlocks.toadstool.defaultBlockState())).decorated(Placement.COUNT_HEIGHTMAP_DOUBLE.configured(new FrequencyConfig(1))));
diff --git a/src/main/java/biomesoplenty/common/biome/overworld/MangroveBiome.java b/src/main/java/biomesoplenty/common/biome/overworld/MangroveBiome.java
index 914254349..7799e4f58 100644
--- a/src/main/java/biomesoplenty/common/biome/overworld/MangroveBiome.java
+++ b/src/main/java/biomesoplenty/common/biome/overworld/MangroveBiome.java
@@ -41,7 +41,7 @@ public class MangroveBiome extends BiomeBOP
         DefaultBiomeFeatures.addDefaultCarvers(this);
         DefaultBiomeFeatures.addStructureFeaturePlacement(this);
 
-        this.addFeature(GenerationStage.Decoration.LOCAL_MODIFICATIONS, Feature.LAKE.configured(new BlockStateFeatureConfig(Blocks.WATER.defaultBlockState())).decorated(Placement.WATER_LAKE.configured(new ChanceConfig(2))));
+        this.addFeature(GenerationStage.Decoration.LOCAL_MODIFICATIONS, Feature.LAKE.configured(new BlockStateFeatureConfig(Blocks.WATER.defaultBlockState())).decorated(Placement.WATER_LAKE.configured(new ChanceConfig(1))));
 
         DefaultBiomeFeatures.addDefaultMonsterRoom(this);
         DefaultBiomeFeatures.addDefaultUndergroundVariety(this);
diff --git a/src/main/java/biomesoplenty/common/biome/overworld/TundraBiome.java b/src/main/java/biomesoplenty/common/biome/overworld/TundraBiome.java
index 049c4d82c..684147ffd 100644
--- a/src/main/java/biomesoplenty/common/biome/overworld/TundraBiome.java
+++ b/src/main/java/biomesoplenty/common/biome/overworld/TundraBiome.java
@@ -63,8 +63,9 @@ public class TundraBiome extends BiomeBOP
         this.addFeature(GenerationStage.Decoration.VEGETAL_DECORATION, Feature.RANDOM_SELECTOR.configured(new MultipleRandomFeatureConfig(ImmutableList.of(BOPBiomeFeatures.DEAD_TWIGLET_TREE_SMALL.configured(DefaultBiomeFeatures.NORMAL_TREE_CONFIG).weighted(0.1F)), BOPBiomeFeatures.MAPLE_TWIGLET_TREE.configured(DefaultBiomeFeatures.NORMAL_TREE_CONFIG))).decorated(Placement.COUNT_EXTRA_HEIGHTMAP.configured(new AtSurfaceWithExtraConfig(1, 0.3F, 1))));
 
         this.addFeature(GenerationStage.Decoration.LOCAL_MODIFICATIONS, Feature.FOREST_ROCK.configured(new BlockBlobConfig(Blocks.COBBLESTONE.defaultBlockState(), 0)).decorated(Placement.FOREST_ROCK.configured(new FrequencyConfig(1))));
-        this.addFeature(GenerationStage.Decoration.VEGETAL_DECORATION, BOPBiomeFeatures.SCATTERED_ROCKS.configured(IFeatureConfig.NONE).decorated(Placement.COUNT_HEIGHTMAP_DOUBLE.configured(new FrequencyConfig(5))));
-        this.addFeature(GenerationStage.Decoration.VEGETAL_DECORATION, new StandardGrassFeature(NoFeatureConfig::deserialize).configured(IFeatureConfig.NONE).decorated(Placement.COUNT_HEIGHTMAP_DOUBLE.configured(new FrequencyConfig(4))));
+        this.addFeature(GenerationStage.Decoration.VEGETAL_DECORATION, BOPBiomeFeatures.SCATTERED_ROCKS.configured(IFeatureConfig.NONE).decorated(Placement.COUNT_HEIGHTMAP_DOUBLE.configured(new FrequencyConfig(3))));
+        this.addFeature(GenerationStage.Decoration.VEGETAL_DECORATION, new StandardGrassFeature(NoFeatureConfig::deserialize).configured(IFeatureConfig.NONE).decorated(Placement.COUNT_HEIGHTMAP_DOUBLE.configured(new FrequencyConfig(5))));
+        this.addFeature(GenerationStage.Decoration.VEGETAL_DECORATION, Feature.RANDOM_PATCH.configured(BiomeFeatureHelper.createClusterConfiguration(Blocks.FERN.defaultBlockState())).decorated(Placement.COUNT_HEIGHTMAP_DOUBLE.configured(new FrequencyConfig(5))));
         this.addFeature(GenerationStage.Decoration.VEGETAL_DECORATION, Feature.RANDOM_PATCH.configured(BiomeFeatureHelper.createClusterConfigurationDoubleWater(BOPBlocks.reed.defaultBlockState())).decorated(Placement.COUNT_HEIGHTMAP_DOUBLE.configured(new FrequencyConfig(4))));
 
         ////////////////////////////////////////////////////////////
diff --git a/src/main/java/biomesoplenty/common/world/gen/feature/MangroveSurfaceBuilder.java b/src/main/java/biomesoplenty/common/world/gen/feature/MangroveSurfaceBuilder.java
index 395e037e8..bcbcd71a3 100644
--- a/src/main/java/biomesoplenty/common/world/gen/feature/MangroveSurfaceBuilder.java
+++ b/src/main/java/biomesoplenty/common/world/gen/feature/MangroveSurfaceBuilder.java
@@ -29,7 +29,7 @@ public class MangroveSurfaceBuilder extends SurfaceBuilder<SurfaceBuilderConfig>
 	public void apply(Random random, IChunk chunkIn, Biome biomeIn, int x, int z, int startHeight, double noise, BlockState defaultBlock, BlockState defaultFluid, int seaLevel, long seed, SurfaceBuilderConfig config)
 	{
 		double d0 = Biome.BIOME_INFO_NOISE.getValue((double)x * 0.25D, (double)z * 0.25D, false);
-		if (d0 > 0.2D) {
+		if (d0 < 0.1D) {
 			int i = x & 15;
 			int j = z & 15;
 			BlockPos.Mutable blockpos$mutableblockpos = new BlockPos.Mutable();