diff --git a/mods/MAPGEN/mcl_biomes/init.lua b/mods/MAPGEN/mcl_biomes/init.lua
index 996cfb5671..7e725b5a47 100644
--- a/mods/MAPGEN/mcl_biomes/init.lua
+++ b/mods/MAPGEN/mcl_biomes/init.lua
@@ -51,7 +51,7 @@ local function register_biomes()
 		node_dust = "mcl_core:snowblock",
 		node_top = "mcl_core:dirt",
 		depth_top = 1,
-		node_filler = "mcl_core:stone",
+		node_filler = "mcl_core:dirt",
 		depth_filler = 3,
 		node_water_top = "mcl_core:ice",
 		depth_water_top = 10,
@@ -92,7 +92,7 @@ local function register_biomes()
 		name = "tundra_ocean",
 		node_top = "mcl_core:dirt",
 		depth_top = 1,
-		node_filler = "mcl_core:stone",
+		node_filler = "mcl_core:dirt",
 		depth_filler = 3,
 		node_riverbed = "mcl_core:dirt",
 		depth_riverbed = 2,
@@ -121,7 +121,7 @@ local function register_biomes()
 		name = "taiga_ocean",
 		node_top = "mcl_core:dirt",
 		depth_top = 1,
-		node_filler = "mcl_core:stone",
+		node_filler = "mcl_core:dirt",
 		depth_filler = 3,
 		node_riverbed = "mcl_core:dirt",
 		depth_riverbed = 2,
@@ -149,11 +149,11 @@ local function register_biomes()
 
 	minetest.register_biome({
 		name = "snowy_grassland_ocean",
-		node_top = "mcl_core:stone",
+		node_top = "mcl_core:dirt",
 		depth_top = 1,
-		node_filler = "mcl_core:stone",
+		node_filler = "mcl_core:dirt",
 		depth_filler = 3,
-		node_riverbed = "mcl_core:stone",
+		node_riverbed = "mcl_core:dirt",
 		depth_riverbed = 2,
 		y_min = mcl_vars.mg_overworld_min,
 		y_max = 4,
@@ -193,11 +193,11 @@ local function register_biomes()
 
 	minetest.register_biome({
 		name = "grassland_ocean",
-		node_top = "mcl_core:stone",
+		node_top = "mcl_core:dirt",
 		depth_top = 1,
-		node_filler = "mcl_core:stone",
+		node_filler = "mcl_core:dirt",
 		depth_filler = 3,
-		node_riverbed = "mcl_core:stone",
+		node_riverbed = "mcl_core:dirt",
 		depth_riverbed = 2,
 		y_min = mcl_vars.mg_overworld_min,
 		y_max = 0,
@@ -236,11 +236,11 @@ local function register_biomes()
 
 	minetest.register_biome({
 		name = "coniferous_forest_ocean",
-		node_top = "mcl_core:stone",
+		node_top = "mcl_core:dirt",
 		depth_top = 1,
-		node_filler = "mcl_core:stone",
+		node_filler = "mcl_core:dirt",
 		depth_filler = 3,
-		node_riverbed = "mcl_core:stone",
+		node_riverbed = "mcl_core:dirt",
 		depth_riverbed = 2,
 		y_min = mcl_vars.mg_overworld_min,
 		y_max = 0,
@@ -279,11 +279,11 @@ local function register_biomes()
 
 	minetest.register_biome({
 		name = "deciduous_forest_ocean",
-		node_top = "mcl_core:stone",
+		node_top = "mcl_core:dirt",
 		depth_top = 1,
-		node_filler = "mcl_core:stone",
+		node_filler = "mcl_core:dirt",
 		depth_filler = 3,
-		node_riverbed = "mcl_core:stone",
+		node_riverbed = "mcl_core:dirt",
 		depth_riverbed = 2,
 		y_min = mcl_vars.mg_overworld_min,
 		y_max = -2,
@@ -309,12 +309,11 @@ local function register_biomes()
 
 	minetest.register_biome({
 		name = "desert_ocean",
-		node_top = "mcl_core:stone",
+		node_top = "mcl_core:redsand",
 		depth_top = 1,
-		node_filler = "mcl_core:stone",
+		node_filler = "mcl_core:redsand",
 		depth_filler = 3,
-		node_stone = "mcl_core:stone",
-		node_riverbed = "mcl_core:stone",
+		node_riverbed = "mcl_core:redsand",
 		depth_riverbed = 2,
 		y_min = mcl_vars.mg_overworld_min,
 		y_max = 0,
@@ -325,12 +324,11 @@ local function register_biomes()
 	-- Sandstone desert
 	minetest.register_biome({
 		name = "sandstone_desert",
-		node_top = "mcl_core:sand",
+		node_top = "mcl_core:redsand",
 		depth_top = 1,
-		node_filler = "mcl_core:sand",
+		node_filler = "mcl_core:redsand",
 		depth_filler = 1,
-		node_stone = "mcl_core:sandstone",
-		node_riverbed = "mcl_core:sand",
+		node_riverbed = "mcl_core:redsand",
 		depth_riverbed = 2,
 		y_min = 0,
 		y_max = upper_limit,
@@ -340,12 +338,11 @@ local function register_biomes()
 
 	minetest.register_biome({
 		name = "sandstone_desert_ocean",
-		node_top = "mcl_core:stone",
+		node_top = "mcl_core:sand",
 		depth_top = 1,
-		node_filler = "mcl_core:stone",
+		node_filler = "mcl_core:sand",
 		depth_filler = 3,
-		node_stone = "mcl_core:stone",
-		node_riverbed = "mcl_core:stone",
+		node_riverbed = "mcl_core:sand",
 		depth_riverbed = 2,
 		y_min = mcl_vars.mg_overworld_min,
 		y_max = 4,
@@ -429,11 +426,11 @@ local function register_biomes()
 
 	minetest.register_biome({
 		name = "savanna_ocean",
-		node_top = "mcl_core:stone",
+		node_top = "mcl_core:dirt",
 		depth_top = 1,
-		node_filler = "mcl_core:stone",
+		node_filler = "mcl_core:coarse_dirt",
 		depth_filler = 3,
-		node_riverbed = "mcl_core:stone",
+		node_riverbed = "mcl_core:dirt",
 		depth_riverbed = 2,
 		y_min = mcl_vars.mg_overworld_min,
 		y_max = -2,
@@ -472,11 +469,11 @@ local function register_biomes()
 
 	minetest.register_biome({
 		name = "rainforest_ocean",
-		node_top = "mcl_core:sand",
+		node_top = "mcl_core:dirt",
 		depth_top = 1,
-		node_filler = "mcl_core:sand",
+		node_filler = "mcl_core:dirt",
 		depth_filler = 3,
-		node_riverbed = "mcl_core:sand",
+		node_riverbed = "mcl_core:dirt",
 		depth_riverbed = 2,
 		y_min = mcl_vars.mg_overworld_min,
 		y_max = -2,
@@ -501,11 +498,11 @@ local function register_biomes()
 
 	minetest.register_biome({
 		name = "mushroom_ocean",
-		node_top = "mcl_core:stone",
+		node_top = "mcl_core:dirt",
 		depth_top = 1,
-		node_filler = "mcl_core:gravel",
+		node_filler = "mcl_core:dirt",
 		depth_filler = 3,
-		node_riverbed = "mcl_core:coarse_dirt",
+		node_riverbed = "mcl_core:dirt",
 		depth_riverbed = 2,
 		y_min = mcl_vars.mg_overworld_min,
 		y_max = 0,