changes

src/models/tanks.js

@@ -72,7 +72,7 @@ const tanksSchema = new mongoose.Schema({
           motor_stop_status: { type: String, default: "1" },
           motor_on_type :{ type: String, default: "manual" },
           capacity:{ type: String ,default: null},
-          water_level:{ type: String ,default: null},
+          water_level:{ type: String ,default: null}, 
           
         }
       ],