diff --git a/register_abm.lua b/register_abm.lua
index a5eab5d..911f94e 100644
--- a/register_abm.lua
+++ b/register_abm.lua
@@ -17,7 +17,7 @@ if minetest.get_modpath("areas") then
         interval = 10/speed,
         chance = 50,
         action = function(pos)
-            if pos.y > -10 and pos.y < 1500 then
+            if pos.y > -10 and pos.y < 30 then
                 minetest.env:add_node(pos, {name="surface_effect:radioactive_earth"})
             end
         end,
@@ -29,8 +29,10 @@ minetest.register_abm({
     interval = 30/speed,
     chance = 2000,
     action = function(pos)
-        if pos.y > -10 and pos.y < 1500 then
-         minetest.env:add_node(pos, {name="fire:basic_flame"})
+        local info_biome = minetest.get_biome_data(pos)
+
+        if pos.y > -10 and pos.y < 500 and info_biome.heat > 45 then
+            minetest.env:add_node(pos, {name="fire:basic_flame"})
         end
     end,
 })
@@ -51,7 +53,9 @@ minetest.register_abm({
     interval = 10/speed,
     chance = 50,
     action = function(pos)
-         if pos.y > -10 and pos.y < 1500 then
+        local info_biome = minetest.get_biome_data(pos)
+
+         if pos.y > -10 and pos.y < 1500 and info_biome.heat > 45 then
              minetest.env:remove_node(pos)
              if minetest.env:get_node({x=pos.x, y=pos.y -1, z=pos.z}).name == "default:water_source" then
                  minetest.env:remove_node({x=pos.x, y=pos.y -1, z=pos.z})