diff --git a/src/main/java/gui/GuiController.java b/src/main/java/gui/GuiController.java
index a402e23..901cf9f 100644
--- a/src/main/java/gui/GuiController.java
+++ b/src/main/java/gui/GuiController.java
@@ -35,9 +35,9 @@ public class GuiController extends AnchorPane {
 
     // ********** Fields **********//
     private ConicalTankProcess conicalTank;
-    private FirstOrderSystem process;
-    private PIController controller;
-    private PITuning piTuning;
+    private FirstOrderSystem   process;
+    private PIController       controller;
+    private PITuning           piTuning;
     private Loop               loop;
 
     @FXML private TextField                   heightSetPointTextField;
@@ -108,7 +108,7 @@ private void registerListeners() {
 
         preferencesMenuItem.setOnAction(value -> showPreferences());
 
-        // Loop refresh
+        // The loop inform about new values, so they are displayed in the gui:
         loop.timeStampProperty().addListener(updateGui);
     }
 
diff --git a/src/main/java/process/ConicalTankProcess.java b/src/main/java/process/ConicalTankProcess.java
index 637b4cc..6d05fae 100644
--- a/src/main/java/process/ConicalTankProcess.java
+++ b/src/main/java/process/ConicalTankProcess.java
@@ -53,15 +53,12 @@ protected void invalidated() {
 
     // ********** Methods **********//
     private void recalculate(){
+        double k = (Math.pow(RADIUS, 2) * Math.PI ) / (Math.pow(HEIGHT, 2));
 
-        double alpha = ((9/2) *
-                (OBSTRUCTION * Math.pow(HEIGHT,2) * Math.sqrt(2*GRAVITY) * Math.pow(heightOperationPoint.get(), -5/2)) /
-                (2 * Math.PI * Math.pow(RADIUS,2))) -
-                ((6 * Math.pow(HEIGHT,2) * inflowOperationPoint.get() * Math.pow(heightOperationPoint.get(),-3)) /
-                (Math.PI * Math.pow(RADIUS,2)));
+        double alpha = ((3 * OBSTRUCTION * Math.sqrt(2*GRAVITY) * Math.pow(getHeightOperationPoint(),-5/2)) / (2 * k)) -
+                ((2 * getInflowOperationPoint() * Math.pow(getHeightOperationPoint(), -3)) / (k));
 
-        double beta = (3 * Math.pow(HEIGHT,2) * Math.pow(heightOperationPoint.get(),-2)) /
-                (Math.PI * Math.pow(RADIUS,2));
+        double beta = Math.pow(getHeightOperationPoint(), -2) / k;
 
         transferFunction.setGain(beta / alpha);
         transferFunction.setTau(1 / alpha);