Dave,
Thats a good idea to try Google. I never have any luck with RC search.
I'm not sure if the Herbie method is listed on Canreef but I have seen a couple of our members tanks that are running it. It just requires two bulkheads and one ball valve - no durso, no stockman.
Here is where it was first posted on RC:
http://reefcentral.com/forums/showth...hreadid=344892
Cheers,
- Chad