plumbing primer
Most of you would know how to do this but these 2 articles are useful for people who have never done this before
http://www.reefaddicts.com/content.php/284-Plumbing-Primer-How-to-purchase-install-bulkheads
http://www.reefaddicts.com/content.php/283-Plumbing-Primer-how-to-do-it-correctly
http://www.reefaddicts.com/content.php/284-Plumbing-Primer-How-to-purchase-install-bulkheads
http://www.reefaddicts.com/content.php/283-Plumbing-Primer-how-to-do-it-correctly