diff --git a/main.rb b/main.rb
index f4d1398..26c3c49 100644
--- a/main.rb
+++ b/main.rb
@@ -313,9 +313,9 @@ class HexagonTerminalWindow < Gosu::Window
 
   def update
     hbgdb = $hex_bgs.debug_get_stats
-    puts "ids: #{hbgdb['i']}"
-    puts "ref: #{hbgdb['r']}"
-    puts "bgs: #{hbgdb['b']}"
+    # puts "ids: #{hbgdb['i']}"
+    # puts "ref: #{hbgdb['r']}"
+    # puts "bgs: #{hbgdb['b']}"
     
     if @output_buffer.length > 0
       render_output
@@ -408,8 +408,9 @@ class HexagonTerminalWindow < Gosu::Window
         hex.y -= $hex_y_offset
       end
     end
-    for hex in @hexes[0]
+    @hexes[0].each.with_index do |hex, i|
       hex.cleanup!
+      @hexes[0][i] = nil
     end
     @hexes = @hexes[1..-1]
     @hexes << []