diff --git a/src/models/tanks.js b/src/models/tanks.js
index ebaebd42..a5fede93 100644
--- a/src/models/tanks.js
+++ b/src/models/tanks.js
@@ -109,7 +109,10 @@ const tanksSchema = new mongoose.Schema({
     ],
     inputWaterlevelPercentage: { type: String, default: null }, 
     outputWaterlevelPercentage: { type: String, default: null } 
-  }
+  },
+  motor_start_notified: { type: Boolean, default: false },
+  motor_stop_notified: { type: Boolean, default: false }
+
 });
 
 const customerautopercentages = ({