diff --git a/configuration.nix b/configuration.nix
index f47ebb0..7a5bd5d 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -55,6 +55,13 @@
   services.openssh.enable = true;
   services.zfs.autoScrub.enable = true;   # Snapshots & Details kommen später
 
+  systemd.services.zfs-prune-snapshots = {
+    description = "Remove ZFS snapshots older than policy";
+    serviceConfig.ExecStart = "/run/current-system/sw/bin/zfs-prune-snapshots -r --keep=2w";
+    startAt = "daily";
+  };
+
+
   # Wir pinnen den Kernel, bis ZFS 2.3.x für 6.13 bereit ist
   boot.kernelPackages = pkgs.linuxPackages_6_12;
 
diff --git a/modules/zfs.nix b/modules/zfs.nix
index b6d36b0..b7081ba 100644
--- a/modules/zfs.nix
+++ b/modules/zfs.nix
@@ -26,9 +26,8 @@
 
   #### 3. Zusätzliche Module / Tools ##################################
   environment.systemPackages = with pkgs; [
-    zfs             # zpool, zfs
+    zfs             # zpool, zfs, arc_summary
     zfs-prune-snapshots
-    arc_summary
   ];
 
   #### 4. Optional: Sanoid statt OpenSolaris-Snapshots ################