diff --git a/2021/6/growth.php b/2021/6/growth.php
index 3955ab3..951f0ec 100644
--- a/2021/6/growth.php
+++ b/2021/6/growth.php
@@ -1,18 +1,13 @@
 #!/usr/bin/env php
 <?php
 
-// This is very hacky
-ini_set('memory_limit', '-1');
-
 $input = file_get_contents("input");
 $input = explode(",", $input);
 
-$days = 256;
+$days = 80;
 
 for($day=0; $day<$days; $day++){
 
-	echo "\rAt day $day/$days. ".count($input)." lanternfish currently. Memory usage: " . floor(memory_get_peak_usage() / 1024 / 1024) . "MiB.";
-
 	foreach($input as $i => &$v) {
 		$v--;
 		if($v == -1) {
diff --git a/2021/6/growth2.php b/2021/6/growth2.php
new file mode 100644
index 0000000..277bc19
--- /dev/null
+++ b/2021/6/growth2.php
@@ -0,0 +1,25 @@
+#!/usr/bin/env php
+<?php
+
+$input = file_get_contents("input");
+$input = explode(",", trim($input));
+
+$fish = array_count_values($input);
+for($i=0; $i<=10; $i++) 
+	if(!array_key_exists($i, $fish)) $fish[$i] = 0;
+
+$days = 256;
+
+for($day=0; $day<$days; $day++) {
+	$fish[7] += $fish[0];
+	$fish[9] += $fish[0];
+
+	for($i=0; $i<10; $i++) {
+		$fish[$i] = $fish[$i+1];
+	}
+}
+
+echo "Total number of fish after $days days: " . array_sum($fish) . "\n";
+
+
+?>