diff --git a/FightSystem_10/src/de/steamwar/fightsystem/utils/WaterRemover_10.java b/FightSystem_10/src/de/steamwar/fightsystem/utils/WaterRemover_10.java
index fe3ddcc..4583277 100644
--- a/FightSystem_10/src/de/steamwar/fightsystem/utils/WaterRemover_10.java
+++ b/FightSystem_10/src/de/steamwar/fightsystem/utils/WaterRemover_10.java
@@ -1,11 +1,11 @@
 package de.steamwar.fightsystem.utils;
 
-import org.bukkit.Material;
+import org.bukkit.block.Block;
 
 class WaterRemover_10 {
     private WaterRemover_10(){}
 
-    static boolean isWater(Material type){
-        return WaterRemover_8.isWater(type);
+    static boolean isWater(Block block){
+        return WaterRemover_8.isWater(block);
     }
 }
diff --git a/FightSystem_12/src/de/steamwar/fightsystem/utils/WaterRemover_12.java b/FightSystem_12/src/de/steamwar/fightsystem/utils/WaterRemover_12.java
index cefc2ba..0040633 100644
--- a/FightSystem_12/src/de/steamwar/fightsystem/utils/WaterRemover_12.java
+++ b/FightSystem_12/src/de/steamwar/fightsystem/utils/WaterRemover_12.java
@@ -1,11 +1,11 @@
 package de.steamwar.fightsystem.utils;
 
-import org.bukkit.Material;
+import org.bukkit.block.Block;
 
 class WaterRemover_12 {
     private WaterRemover_12(){}
 
-    static boolean isWater(Material type){
-        return WaterRemover_8.isWater(type);
+    static boolean isWater(Block block){
+        return WaterRemover_8.isWater(block);
     }
 }
diff --git a/FightSystem_14/src/de/steamwar/fightsystem/utils/WaterRemover_14.java b/FightSystem_14/src/de/steamwar/fightsystem/utils/WaterRemover_14.java
index 2e173bf..524352f 100644
--- a/FightSystem_14/src/de/steamwar/fightsystem/utils/WaterRemover_14.java
+++ b/FightSystem_14/src/de/steamwar/fightsystem/utils/WaterRemover_14.java
@@ -1,11 +1,21 @@
 package de.steamwar.fightsystem.utils;
 
 import org.bukkit.Material;
+import org.bukkit.block.Block;
+import org.bukkit.block.data.BlockData;
+import org.bukkit.block.data.Waterlogged;
 
 class WaterRemover_14 {
     private WaterRemover_14(){}
 
-    static boolean isWater(Material type){
-        return type == Material.WATER;
+    static boolean isWater(Block block){
+        if(block.getType() == Material.WATER)
+            return true;
+
+        BlockData data = block.getBlockData();
+        if(!(data instanceof Waterlogged))
+            return false;
+
+        return ((Waterlogged) data).isWaterlogged();
     }
 }
diff --git a/FightSystem_15/src/de/steamwar/fightsystem/utils/TechHider_15.java b/FightSystem_15/src/de/steamwar/fightsystem/utils/TechHider_15.java
index 10b49ad..e249666 100644
--- a/FightSystem_15/src/de/steamwar/fightsystem/utils/TechHider_15.java
+++ b/FightSystem_15/src/de/steamwar/fightsystem/utils/TechHider_15.java
@@ -51,7 +51,7 @@ public class TechHider_15 {
                     return;
                 }
 
-                cached = packet.deepClone();
+                cached = packet.shallowClone();
                 ITechHider.packetCache.put(packet, cached);
                 e.setPacket(cached);
                 StructureModifier<List<NbtBase<?>>> list = cached.getListNbtModifier();
diff --git a/FightSystem_15/src/de/steamwar/fightsystem/utils/WaterRemover_15.java b/FightSystem_15/src/de/steamwar/fightsystem/utils/WaterRemover_15.java
index 73bf6e6..2d9191b 100644
--- a/FightSystem_15/src/de/steamwar/fightsystem/utils/WaterRemover_15.java
+++ b/FightSystem_15/src/de/steamwar/fightsystem/utils/WaterRemover_15.java
@@ -1,11 +1,11 @@
 package de.steamwar.fightsystem.utils;
 
-import org.bukkit.Material;
+import org.bukkit.block.Block;
 
 class WaterRemover_15 {
     private WaterRemover_15(){}
 
-    static boolean isWater(Material type){
-        return WaterRemover_14.isWater(type);
+    static boolean isWater(Block block){
+        return WaterRemover_14.isWater(block);
     }
 }
diff --git a/FightSystem_8/src/de/steamwar/fightsystem/utils/WaterRemover_8.java b/FightSystem_8/src/de/steamwar/fightsystem/utils/WaterRemover_8.java
index e4d1c23..0360a49 100644
--- a/FightSystem_8/src/de/steamwar/fightsystem/utils/WaterRemover_8.java
+++ b/FightSystem_8/src/de/steamwar/fightsystem/utils/WaterRemover_8.java
@@ -1,11 +1,13 @@
 package de.steamwar.fightsystem.utils;
 
 import org.bukkit.Material;
+import org.bukkit.block.Block;
 
 public class WaterRemover_8 {
     private WaterRemover_8(){}
 
-    static boolean isWater(Material type){
+    static boolean isWater(Block block){
+        Material type = block.getType();
         return type == Material.WATER || type == Material.STATIONARY_WATER;
     }
 }
diff --git a/FightSystem_9/src/de/steamwar/fightsystem/utils/WaterRemover_9.java b/FightSystem_9/src/de/steamwar/fightsystem/utils/WaterRemover_9.java
index 3243269..ddb621b 100644
--- a/FightSystem_9/src/de/steamwar/fightsystem/utils/WaterRemover_9.java
+++ b/FightSystem_9/src/de/steamwar/fightsystem/utils/WaterRemover_9.java
@@ -1,11 +1,12 @@
 package de.steamwar.fightsystem.utils;
 
 import org.bukkit.Material;
+import org.bukkit.block.Block;
 
 class WaterRemover_9 {
     private WaterRemover_9(){}
 
-    static boolean isWater(Material type){
-        return WaterRemover_8.isWater(type);
+    static boolean isWater(Block block){
+        return WaterRemover_8.isWater(block);
     }
 }
diff --git a/FightSystem_Main/src/de/steamwar/fightsystem/utils/WaterRemover.java b/FightSystem_Main/src/de/steamwar/fightsystem/utils/WaterRemover.java
index 08eeeda..64ef49e 100644
--- a/FightSystem_Main/src/de/steamwar/fightsystem/utils/WaterRemover.java
+++ b/FightSystem_Main/src/de/steamwar/fightsystem/utils/WaterRemover.java
@@ -14,7 +14,7 @@ public class WaterRemover {
 
     private WaterRemover(){}
 
-    private static final Map<Location, Integer> explodedBlocks = new HashMap<>();
+    private static final Map<Location, Integer> explodedBlocks = Collections.synchronizedMap(new HashMap<>());
     private static Set<Block> waterList = new HashSet<>();
 
     public static void init() {
@@ -25,18 +25,16 @@ public class WaterRemover {
     }
 
     public static void add(List<Block> l) {
-        synchronized (explodedBlocks){
-            l.forEach((Block b) -> explodedBlocks.put(b.getLocation(), 0));
-        }
+        l.forEach((Block b) -> explodedBlocks.put(b.getLocation(), 0));
     }
 
     private static void wateredCheck() {
-        synchronized (explodedBlocks){
+        try{
             Iterator<Map.Entry<Location, Integer>> it = explodedBlocks.entrySet().iterator();
             while (it.hasNext()) {
                 Map.Entry<Location, Integer> e = it.next();
                 Block b = e.getKey().getBlock();
-                if (isWater(b.getType()))
+                if (isWater(b))
                     waterList.add(b);
 
                 if(b.getType() != Material.AIR){
@@ -48,6 +46,8 @@ public class WaterRemover {
                 if(e.getValue() > 15)
                     it.remove();
             }
+        }catch(ConcurrentModificationException e){
+            wateredCheck();
         }
     }
 
@@ -57,7 +57,7 @@ public class WaterRemover {
         while(it.hasNext()){
             Block b = it.next();
             blocksToRemove.addAll(getSourceBlocksOfWater(b));
-            if (!isWater(b.getType()))
+            if (!isWater(b))
                 it.remove();
         }
 
@@ -72,13 +72,13 @@ public class WaterRemover {
 
     private static void collectBlocks(Block anchor, Set<Block> collected, Set<Block> visitedBlocks) {
         if(
-                !isWater(anchor.getType()) ||
+                !isWater(anchor) ||
                 visitedBlocks.contains(anchor)
         )
             return;
 
         visitedBlocks.add(anchor);
-        if (isWater(anchor.getType()))
+        if (isWater(anchor))
             collected.add(anchor);
 
         if(visitedBlocks.size() > 100) {
@@ -92,20 +92,20 @@ public class WaterRemover {
         collectBlocks(anchor.getRelative(BlockFace.WEST), collected, visitedBlocks);
     }
 
-    public static boolean isWater(Material type){
+    public static boolean isWater(Block block){
         switch(Core.getVersion()){
             case 15:
-                return WaterRemover_15.isWater(type);
+                return WaterRemover_15.isWater(block);
             case 14:
-                return WaterRemover_14.isWater(type);
+                return WaterRemover_14.isWater(block);
             case 10:
-                return WaterRemover_10.isWater(type);
+                return WaterRemover_10.isWater(block);
             case 9:
-                return WaterRemover_9.isWater(type);
+                return WaterRemover_9.isWater(block);
             case 8:
-                return WaterRemover_8.isWater(type);
+                return WaterRemover_8.isWater(block);
             default:
-                return WaterRemover_12.isWater(type);
+                return WaterRemover_12.isWater(block);
         }
     }
 }
diff --git a/FightSystem_Main/src/de/steamwar/fightsystem/winconditions/WinconditionWaterTechKO.java b/FightSystem_Main/src/de/steamwar/fightsystem/winconditions/WinconditionWaterTechKO.java
index f845bca..3b673a1 100644
--- a/FightSystem_Main/src/de/steamwar/fightsystem/winconditions/WinconditionWaterTechKO.java
+++ b/FightSystem_Main/src/de/steamwar/fightsystem/winconditions/WinconditionWaterTechKO.java
@@ -3,12 +3,11 @@ package de.steamwar.fightsystem.winconditions;
 import de.steamwar.fightsystem.Config;
 import de.steamwar.fightsystem.FightSystem;
 import de.steamwar.fightsystem.fight.Fight;
-import de.steamwar.fightsystem.states.FightState;
 import de.steamwar.fightsystem.fight.FightTeam;
+import de.steamwar.fightsystem.states.FightState;
 import de.steamwar.fightsystem.utils.WaterRemover;
 import org.bukkit.Bukkit;
 import org.bukkit.Location;
-import org.bukkit.Material;
 import org.bukkit.World;
 import org.bukkit.scheduler.BukkitTask;
 
@@ -96,8 +95,7 @@ public class WinconditionWaterTechKO extends Wincondition {
         for(int x = minX; x <= maxX; x++) {
             for(int y = minY; y <= maxY; y++) {
                 for (int z = minZ; z <= maxZ; z++) {
-                    Material type = WORLD.getBlockAt(x, y, z).getType();
-                    if (WaterRemover.isWater(type))
+                    if (WaterRemover.isWater(WORLD.getBlockAt(x, y, z)))
                         teamWater.add(new Location(WORLD, x, y, z));
                 }
             }