I just wanted to share my new disc diffuser setup. The first one is of a 4 disc system and the second is a 2 disc system. I purchased the discs and made the rest out of PVC pipe.

http://www.rvanorman.com/images/misc/diffuser2.jpg
http://www.rvanorman.com/images/misc/diffuser3.jpg

The disc diffuser screws right in:
http://www.rvanorman.com/images/misc/diffuser1.jpg

Bob

Have a day that you truly deserve!