Just my 2 cents worth,
Go to :
http://www.rl180reef.com/frames.htm
stand pipes are easy....supplies @ Home depot.
I also have a quiet-one 6000...not so quiet and hot....go with the mag or for external a mak4 or for more money Iwaki etc.
I second the idea of unions, before and after pumps.......watch valves on the drain(s)...if they plug or gum up
IMHO