diff --git a/src/specificClass.js b/src/specificClass.js
index efe0f1d..62236d1 100644
--- a/src/specificClass.js
+++ b/src/specificClass.js
@@ -182,21 +182,6 @@ class Reactor_PFR extends Reactor {
         this.D = input.payload;
     }
 
-    /**
-     * Setter for influent data.
-     * @param {object} input - Input object (msg) containing payload with inlet index, flow rate, and concentrations.
-    */
-    set setInfluent(input) {
-        super.setInfluent = input;
-        if(DEBUG) {
-            console.log("Inlet state max " + math.max(this.state[0]))
-            console.log("Pe total " + this.length*math.sum(this.Fs)/(this.D*this.A));
-            console.log("Pe local " + this.d_x*math.sum(this.Fs)/(this.D*this.A));
-            console.log("Co ad " + math.sum(this.Fs)*this.timeStep/(this.A*this.d_x));
-            console.log("Co D " + this.D*this.timeStep/(this.d_x*this.d_x));
-        }
-    }
-
     /**
      * Getter for effluent data.
      * @returns {object} Effluent data object (msg), defaults to inlet 0.
@@ -205,6 +190,23 @@ class Reactor_PFR extends Reactor {
         return { topic: "Fluent", payload: { inlet: 0, F: math.sum(this.Fs), C: this.state.at(-1) }, timestamp: this.currentTime };
     }
 
+    updateState(newTime) {
+        super.updateState(newTime);
+        let Pe_local = this.d_x*math.sum(this.Fs)/(this.D*this.A)
+        let Co_D = this.D*this.timeStep/(this.d_x*this.d_x);
+
+        (Pe_local >= 2) && console.warn(`Local Péclet number (${Pe_local}) is too high! Increase reactor resolution.`);
+        (Co_D >= 0.5) && console.warn(`Courant number (${Co_D}) is too high! Reduce time step size.`);
+
+        if(DEBUG) {
+            console.log("Inlet state max " + math.max(this.state[0]))
+            console.log("Pe total " + this.length*math.sum(this.Fs)/(this.D*this.A));
+            console.log("Pe local " + Pe_local);
+            console.log("Co ad " + math.sum(this.Fs)*this.timeStep/(this.A*this.d_x));
+            console.log("Co D " + Co_D);
+        }
+    }
+
     /**
      * Tick the reactor state using explicit finite difference method.
      * @param {number} time_step - Time step for the simulation [d].