Took my filter socks offline today....
 

..after reading an article by Ron Shimek on his website. The article is on Reef Tank Plankton. I didn't realize that so many live larvae made it through our recirulating pumps.
Part of the article is here: http://www.ronshimek.com/ahabs_002.html

He basically used a powerhead to push tank water through a 53 micron net for 30 minutes and studied what was caught.

Mitch

Thanks for the link Mitch, another good read!