diff -r fc0c10d79539 -r 2dfead81c72f src/Utils.cpp
--- a/src/Utils.cpp	Tue Jan 10 16:56:21 2023 +0100
+++ b/src/Utils.cpp	Thu Jan 12 14:34:14 2023 +0100
@@ -444,9 +444,11 @@
     double BoilTime_factor1 = ((1 - exp(-0.04 * T1)) / kUtilisation);
     double BoilTime_factor2 = ((1 - exp(-0.04 * T2)) / kUtilisation);
     double ibu = Bigness_factor * (BoilTime_factor2 - BoilTime_factor1) * AddedAlphaAcids;
-    //qDebug() << "TinsethIBU" << SG << Amount << Alpha << Volume << kUtilisation << Bigness_factor * (BoilTime_factor2 - BoilTime_factor1) << "ibu:" << ibu;
 
-    //qDebug() << "boilIBU" << Form << SG << Volume << Amount << BoilTime_factor2 << BoilTime_factor1 << Alpha << "IBU:" << ibu;
+#ifdef DEBUG_IBU
+    qDebug() << "TinsethIBU" << SG << Amount << Alpha << Volume << kUtilisation << Bigness_factor * (BoilTime_factor2 - BoilTime_factor1) << "ibu:" << ibu;
+    qDebug() << "   boilIBU" << Form << SG << Volume << Amount << BoilTime_factor2 << BoilTime_factor1 << Alpha << "IBU:" << ibu;
+#endif
     return ibu;
 }
 
@@ -501,7 +503,9 @@
 	    double flameout_time = 1;
 	    double fibu = TinsethIBU(Form, postSG, Volume, Amount, boil_time, boil_time + flameout_time, Alpha, Utilisation, BU_factor);
 	    fibu *= IBU_reduction(bp - 0.5);	/* Boilpoint minus 0.5 degree */
-	    //qDebug() << "during flameout" << fibu << bp;
+#ifdef DEBUG_IBU
+	    qDebug() << "during flameout" << fibu << bp;
+#endif
 	    nibu += fibu;
 
 	    if ((Cooltype == CHILLER_TYPE_IMMERSION || Cooltype == CHILLER_TYPE_AUBAINMARIE || Cooltype == CHILLER_TYPE_NOCHILL) && CoolTo79 > 0) {
@@ -512,10 +516,14 @@
 		for (int i = 1; i < int(CoolTo79); i++) {
 		    tibu = TinsethIBU(Form, postSG, Volume, Amount, boil_time + flameout_time + i, boil_time + flameout_time + i + 1, Alpha, Utilisation, BU_factor);
 		    tibu *= IBU_reduction((bp - 1) - (i * ((bp - 80) / CoolTo79)));
-		    //qDebug() << "  chill" << i << "time" << boil_time + flameout_time + i << "temp" << (bp - 1) - (i * ((bp - 80) / CoolTo79)) << "ibu" << tibu;
+#ifdef DEBUG_IBU
+		    qDebug() << "  chill" << i << "time" << boil_time + flameout_time + i << "temp" << (bp - 1) - (i * ((bp - 80) / CoolTo79)) << "ibu" << tibu;
+#endif
 		    cibu += tibu;
 		}
-		//qDebug() << "  immersion" << cibu;
+#ifdef DEBUG_IBU
+		qDebug() << "  immersion" << cibu;
+#endif
 		nibu += cibu;
 	    }
 
@@ -534,10 +542,14 @@
 		     * Asume 0.1 degree per minute.
 		     */
 		    tibu *= IBU_reduction((bp - 1) - (i * 0.1));
-		    //qDebug() << "  chill" << i << steps << "left" << V << A << "time" << boil_time + flameout_time + i << "ibu" << tibu;
+#ifdef DEBUG_IBU
+		    qDebug() << "  chill" << i << steps << "left" << V << A << "time" << boil_time + flameout_time + i << "ibu" << tibu;
+#endif
 		    cibu += tibu;
 		}
-		//qDebug() << "  counterflow" << cibu;
+#ifdef DEBUG_IBU
+		qDebug() << "  counterflow" << cibu;
+#endif
                 nibu += cibu;
 	    }
 
@@ -547,22 +559,30 @@
 	    if (Whirlpool9) {
 		double wibu9 = TinsethIBU(Form, postSG, Volume, Amount, boil_time + flameout_time, boil_time + flameout_time + Whirlpool9, Alpha, Utilisation, BU_factor);
 		wibu9 *= IBU_reduction(87.0);
-		//qDebug() << "during whirlpool9" << wibu9;
+#ifdef DEBUG_IBU
+		qDebug() << "during whirlpool9" << wibu9;
+#endif
 		nibu += wibu9;
 	    }
 	    if (Whirlpool7) {
 		double wibu7 = TinsethIBU(Form, postSG, Volume, Amount, boil_time + flameout_time, boil_time + flameout_time + Whirlpool7, Alpha, Utilisation, BU_factor);
 		wibu7 *= IBU_reduction(74.0);
-		//qDebug() << "during whirlpool7" << wibu7;
+#ifdef DEBUG_IBU
+		qDebug() << "during whirlpool7" << wibu7;
+#endif
 		nibu += wibu7;
 	    }
 	    if (Whirlpool6) {
                 double wibu6 = TinsethIBU(Form, postSG, Volume, Amount, boil_time + flameout_time, boil_time + flameout_time + Whirlpool6, Alpha, Utilisation, BU_factor);
                 wibu6 *= IBU_reduction(63.0);
-                //qDebug() << "during whirlpool6" << wibu6;
+#ifdef DEBUG_IBU
+                qDebug() << "during whirlpool6" << wibu6;
+#endif
                 nibu += wibu6;
             }
-	    //qDebug() << "Old IBU" << ibu << "New IBU" << nibu;
+#ifdef DEBUG_IBU
+	    qDebug() << "Old IBU" << ibu << "New IBU" << nibu;
+#endif
 	    ibu = nibu;
 	}
 
@@ -582,10 +602,14 @@
 	    for (int i = 1; i < int(CoolTo79); i++) {
 		tibu = TinsethIBU(Form, postSG, Volume, Amount, flameout_time + i, flameout_time + i + 1, Alpha, Utilisation, BU_factor);
 		tibu *= IBU_reduction((bp - 1) - (i * ((bp - 80) / CoolTo79)));
-		//qDebug() << "  chill" << i << "time" << flameout_time + i << "temp" << (bp - 1) - (i * ((bp - 80) / CoolTo79)) << "ibu" << tibu;
+#ifdef DEBUG_IBU
+		qDebug() << "  chill" << i << "time" << flameout_time + i << "temp" << (bp - 1) - (i * ((bp - 80) / CoolTo79)) << "ibu" << tibu;
+#endif
 		cibu += tibu;
 	    }
-	    //qDebug() << "  immersion" << cibu;
+#ifdef DEBUG_IBU
+	    qDebug() << "  immersion" << cibu;
+#endif
 	    ibu += cibu;
 	}
 
@@ -604,10 +628,14 @@
 		 * Asume 0.1 degree per minute.
 		 */
 		tibu *= IBU_reduction((bp - 1) - (i * 0.1));
-		//qDebug() << "  chill" << i << steps << "left" << V << A << "time" << flameout_time + i << "ibu" << tibu;
+#ifdef DEBUG_IBU
+		qDebug() << "  chill" << i << steps << "left" << V << A << "time" << flameout_time + i << "ibu" << tibu;
+#endif
 		cibu += tibu;
 	    }
-	    //qDebug() << "  counterflow" << cibu;
+#ifdef DEBUG_IBU
+	    qDebug() << "  counterflow" << cibu;
+#endif
 	    ibu += cibu;
 	}
 
@@ -617,19 +645,25 @@
         if (Whirlpool9) {
             double wibu9 = TinsethIBU(Form, postSG, Volume, Amount, flameout_time, flameout_time + Whirlpool9, Alpha, Utilisation, BU_factor);
             wibu9 *= IBU_reduction(87.0);
-            //qDebug() << "during whirlpool9" << wibu9;
+#ifdef DEBUG_IBU
+            qDebug() << "during whirlpool9" << wibu9;
+#endif
             ibu += wibu9;
         }
         if (Whirlpool7) {
             double wibu7 = TinsethIBU(Form, postSG, Volume, Amount, flameout_time, flameout_time + Whirlpool7, Alpha, Utilisation, BU_factor);
             wibu7 *= IBU_reduction(74.0);
-            //qDebug() << "during whirlpool7" << wibu7;
+#ifdef DEBUG_IBU
+            qDebug() << "during whirlpool7" << wibu7;
+#endif
             ibu += wibu7;
         }
         if (Whirlpool6) {
             double wibu6 = TinsethIBU(Form, postSG, Volume, Amount, flameout_time, flameout_time + Whirlpool6, Alpha, Utilisation, BU_factor);
             wibu6 *= IBU_reduction(63.0);
-            //qDebug() << "during whirlpool6" << wibu6;
+#ifdef DEBUG_IBU
+            qDebug() << "during whirlpool6" << wibu6;
+#endif
             ibu += wibu6;
         }
 
@@ -640,19 +674,25 @@
         if (Whirlpool9) {
             double wibu9 = TinsethIBU(Form, postSG, Volume, Amount, 0, Whirlpool9, Alpha, Utilisation, BU_factor);
             wibu9 *= IBU_reduction(87.0);
-            //qDebug() << "during whirlpool9" << wibu9;
+#ifdef DEBUG_IBU
+            qDebug() << "during whirlpool9" << wibu9;
+#endif
             ibu = wibu9;
         }
         if (Whirlpool7) {
             double wibu7 = TinsethIBU(Form, postSG, Volume, Amount, 0, Whirlpool7, Alpha, Utilisation, BU_factor);
             wibu7 *= IBU_reduction(74.0);
-            //qDebug() << "during whirlpool7" << wibu7;
+#ifdef DEBUG_IBU
+            qDebug() << "during whirlpool7" << wibu7;
+#endif
             ibu = wibu7;
         }
         if (Whirlpool6) {
             double wibu6 = TinsethIBU(Form, postSG, Volume, Amount, 0, Whirlpool6, Alpha, Utilisation, BU_factor);
             wibu6 *= IBU_reduction(63.0);
-            //qDebug() << "during whirlpool6" << wibu6;
+#ifdef DEBUG_IBU
+            qDebug() << "during whirlpool6" << wibu6;
+#endif
             ibu = wibu6;
         }
     } else if (Use == HOP_USEAT_BOTTLING) {
@@ -672,7 +712,9 @@
 
     double rc = round(ibu * 1000.0) / 1000.0;
 
+#ifdef DEBUG_IBU
     qDebug() << "toIBU" << Use << Form << preSG << postSG << Volume << Amount << Boiltime << Alpha << Method << Whirlpool9 << Whirlpool7 << Whirlpool6 << Fulltime << Cooltype << CoolTo79 << CoolLPM << Utilisation << BU_factor << "rc:" << rc;
+#endif
     return rc;
 }