Approve Photos - Memory Error

When I select "Approve Photos" via the admin drop-down, they load and I select the catgories I want them in and hit SUBMIT. Then I get:
Fatal error: Allowed memory size of 16777216 bytes exhausted (tried to allocate 97 bytes) in /home/virtual/site2/fst/var/www/html/pp-inc.php on line 1547

so I add:

ini_set("memory_limit", "24M");

to bulkupload.php

Now, when I select the images to approve via admin drop-down, I get:
Fatal error: Allowed memory size of 16777216 bytes exhausted (tried to allocate 97 bytes) in /home/virtual/site2/fst/var/www/html/pp-inc.php on line 1547

[Chuck S]

You can add those ini_set variables to pp-inc.php

Thank you. Maybe this should be an admin setting? And I still don't get why I did not have these errors in 4.6.8 but I have on 3 different servers/installs on 5.0+.... both in bulk upload in bulk move.