diff --git a/src/main/java/de/ellpeck/naturesaura/api/aura/chunk/IAuraChunk.java b/src/main/java/de/ellpeck/naturesaura/api/aura/chunk/IAuraChunk.java
index 2e2a32bd..9439c452 100644
--- a/src/main/java/de/ellpeck/naturesaura/api/aura/chunk/IAuraChunk.java
+++ b/src/main/java/de/ellpeck/naturesaura/api/aura/chunk/IAuraChunk.java
@@ -132,13 +132,13 @@ public interface IAuraChunk extends ICapabilityProvider, INBTSerializable<NBTTag
      * @return The amount of Aura drained. Will only be different from the
      * supplied amount if stopAtZero is true
      */
-    int drainAura(BlockPos pos, int amount, boolean aimForZero);
+    int drainAura(BlockPos pos, int amount, boolean aimForZero, boolean simulate);
 
     /**
-     * Convenience version of {@link #drainAura(BlockPos, int, boolean)} with
-     * aimForZero set to false, as this is the most likely behavior you will
-     * want. Notice that {@link #storeAura(BlockPos, int)} has aimForZero set to
-     * true.
+     * Convenience version of {@link #drainAura(BlockPos, int, boolean,
+     * boolean)} with aimForZero and simulate set to false, as this is the most
+     * likely behavior you will want. Notice that {@link #storeAura(BlockPos,
+     * int)} has aimForZero set to true.
      */
     int drainAura(BlockPos pos, int amount);
 
@@ -155,13 +155,13 @@ public interface IAuraChunk extends ICapabilityProvider, INBTSerializable<NBTTag
      * @return The amount of Aura stored. Will only be different from the
      * supplied amount if stopAtZero is true
      */
-    int storeAura(BlockPos pos, int amount, boolean aimForZero);
+    int storeAura(BlockPos pos, int amount, boolean aimForZero, boolean simulate);
 
     /**
-     * Convenience version of {@link #storeAura(BlockPos, int, boolean)} with
-     * aimForZero set to true, as this is the most likely behavior you will
-     * want. Notice that {@link #drainAura(BlockPos, int)} has aimForZero set to
-     * false.
+     * Convenience version of {@link #storeAura(BlockPos, int, boolean,
+     * boolean)} with aimForZero set to true and simulate set to false, as this
+     * is the most likely behavior you will want. Notice that {@link
+     * #drainAura(BlockPos, int)} has aimForZero set to false.
      */
     int storeAura(BlockPos pos, int amount);
 
diff --git a/src/main/java/de/ellpeck/naturesaura/chunk/AuraChunk.java b/src/main/java/de/ellpeck/naturesaura/chunk/AuraChunk.java
index ddf9422a..8bf95d6f 100644
--- a/src/main/java/de/ellpeck/naturesaura/chunk/AuraChunk.java
+++ b/src/main/java/de/ellpeck/naturesaura/chunk/AuraChunk.java
@@ -53,7 +53,7 @@ public class AuraChunk implements IAuraChunk {
     }
 
     @Override
-    public int drainAura(BlockPos pos, int amount, boolean aimForZero) {
+    public int drainAura(BlockPos pos, int amount, boolean aimForZero, boolean simulate) {
         if (amount <= 0)
             return 0;
         MutableInt spot = this.getDrainSpot(pos);
@@ -62,18 +62,20 @@ public class AuraChunk implements IAuraChunk {
             if (curr > 0 && curr - amount < 0)
                 amount = curr;
         }
-        spot.subtract(amount);
-        this.markDirty();
+        if (!simulate) {
+            spot.subtract(amount);
+            this.markDirty();
+        }
         return amount;
     }
 
     @Override
     public int drainAura(BlockPos pos, int amount) {
-        return this.drainAura(pos, amount, false);
+        return this.drainAura(pos, amount, false, false);
     }
 
     @Override
-    public int storeAura(BlockPos pos, int amount, boolean aimForZero) {
+    public int storeAura(BlockPos pos, int amount, boolean aimForZero, boolean simulate) {
         if (amount <= 0)
             return 0;
         MutableInt spot = this.getDrainSpot(pos);
@@ -83,14 +85,16 @@ public class AuraChunk implements IAuraChunk {
                 amount = -curr;
             }
         }
-        spot.add(amount);
-        this.markDirty();
+        if (!simulate) {
+            spot.add(amount);
+            this.markDirty();
+        }
         return amount;
     }
 
     @Override
     public int storeAura(BlockPos pos, int amount) {
-        return this.storeAura(pos, amount, true);
+        return this.storeAura(pos, amount, true, false);
     }
 
     @Override