Oh, think I found it by doing a regular Google search with what you said, lol.

It didn't come up with any results from my model number of DE filter though.

This is the part of my manual I'm talking about. Maybe I should just see if you guys have seen something like his or get your opinion. Has anyone seen something similar to this? Where a smaller filter uses more DE than the bigger one?

http://echo7.x10hosting.com/images/filter.jpg