diff --git a/scripts/SimulationParameters/MicrobeStage/Compounds.json b/scripts/SimulationParameters/MicrobeStage/Compounds.json
index d7f4d5cbd30..3ada35d96f1 100644
--- a/scripts/SimulationParameters/MicrobeStage/Compounds.json
+++ b/scripts/SimulationParameters/MicrobeStage/Compounds.json
@@ -77,6 +77,19 @@
         }
     },
     
+    "iron": {
+        "name": "Iron",
+        "volume": 1,
+        "isCloud": true,
+        "isUseful": false,
+        "isEnvironmental": false,
+        "colour": {
+            "r": 0.28,
+            "g": 0.098,
+            "b": 0.02
+        }
+    },
+    
     "oxygen": {
         "name": "Oxygen",
         "volume": 1,
@@ -101,18 +114,5 @@
             "g": 0.0,
             "b": 0.0
         }
-    },
-    
-    "iron": {
-        "name": "Iron",
-        "volume": 1,
-        "isCloud": true,
-        "isUseful": false,
-        "isEnvironmental": false,
-        "colour": {
-            "r": 0.28,
-            "g": 0.098,
-            "b": 0.02
-        }
     }
 }
diff --git a/scripts/microbe_stage/configs.as b/scripts/microbe_stage/configs.as
index 0703beaea50..884a67a5b0c 100644
--- a/scripts/microbe_stage/configs.as
+++ b/scripts/microbe_stage/configs.as
@@ -20,7 +20,7 @@ const auto MAX_COLOR = 0.9f;
 const auto MIN_COLOR_MUTATION = -0.005f;
 const auto MAX_COLOR_MUTATION = 0.005f;
 
-const auto MIN_OPACITY = 0.2f;
+const auto MIN_OPACITY = 0.5f;
 const auto MAX_OPACITY = 1.8f;
 
 const auto MIN_OPACITY_CHITIN = 0.4f;
diff --git a/src/microbe_stage/compound_cloud_system.cpp b/src/microbe_stage/compound_cloud_system.cpp
index ddf378b196e..2162a272cab 100644
--- a/src/microbe_stage/compound_cloud_system.cpp
+++ b/src/microbe_stage/compound_cloud_system.cpp
@@ -284,23 +284,36 @@ void
             m_position.X, CLOUD_Y_COORDINATE, m_position.Z);
 
     // Clear data. Maybe there is a faster way
+    if(m_compoundId1 != NULL_COMPOUND) {
     for(size_t x = 0; x < m_density1.size(); ++x) {
         for(size_t y = 0; y < m_density1[x].size(); ++y) {
-            if(m_compoundId1 != NULL_COMPOUND) {
                 m_density1[x][y] = 0;
                 m_oldDens1[x][y] = 0;
             }
+		}
+	}
 
-            if(m_compoundId2 != NULL_COMPOUND) {
+    if(m_compoundId2 != NULL_COMPOUND) {
+        for(size_t x = 0; x < m_density2.size(); ++x) {
+            for(size_t y = 0; y < m_density2[x].size(); ++y) {
                 m_density2[x][y] = 0;
                 m_oldDens2[x][y] = 0;
             }
+        }
+    }
 
-            if(m_compoundId3 != NULL_COMPOUND) {
+    if(m_compoundId3 != NULL_COMPOUND) {
+        for(size_t x = 0; x < m_density3.size(); ++x) {
+            for(size_t y = 0; y < m_density3[x].size(); ++y) {
                 m_density3[x][y] = 0;
                 m_oldDens3[x][y] = 0;
             }
-            if(m_compoundId4 != NULL_COMPOUND) {
+        }
+    }
+
+    if(m_compoundId4 != NULL_COMPOUND) {
+        for(size_t x = 0; x < m_density4.size(); ++x) {
+            for(size_t y = 0; y < m_density4[x].size(); ++y) {
                 m_density4[x][y] = 0;
                 m_oldDens4[x][y] = 0;
             }
@@ -1134,6 +1147,7 @@ void
     // Etc.
     if(cloud.m_compoundId3 != NULL_COMPOUND)
         fillCloudChannel(cloud.m_density3, 2, rowBytes, pDest);
+
     if(cloud.m_compoundId4 != NULL_COMPOUND)
         fillCloudChannel(cloud.m_density4, 3, rowBytes, pDest);