diff -r c062eb0dd7ce -r f3faa54581ff www/includes/formulas.php
--- a/www/includes/formulas.php	Mon Oct 28 20:52:17 2019 +0100
+++ b/www/includes/formulas.php	Tue Oct 29 10:44:08 2019 +0100
@@ -235,11 +235,19 @@
         }
 
 	$whirlibus = 0;
-        if ($useat == 4) { // Any whirlpool
-		if ($whirlpool9)
+        if ($useat == 3 || $useat == 4) { // Flameout or any whirlpool
+		if ($whirlpool9) {
 			$whirlibus += ($mass * ($alpha / 100) * 20) / $volume * $whirlpool9 / 50;
-		if ($whirlpool7)
+		} else {
+			if ($useat == 3) // Flameout hops are 2 minutes in this range.
+				$whirlibus += ($mass * ($alpha / 100) * 20) / $volume * (2 / 50);
+		}
+		if ($whirlpool7) {
 			$whirlibus += ($mass * ($alpha / 100) * 6) / $volume * $whirlpool7 / 50;
+		} else {
+			if ($useat == 3) // Flameout hops are 4 minutes in this range.
+				$whirlibus += ($mass * ($alpha / 100) * 6) / $volume * (4 / 50);
+		}
 		if ($whirlpool6)
 			$whirlibus += ($mass * ($alpha / 100) * 2) / $volume * $whirlpool6 / 50;
 	}