Who has built a RO with two 4X40 membranes in series

[KReinisch]

I know there are a ton of threads on home builds but I can't seem to pinpoint one that is what I would like to build. Going to build one soon and just looking if anyone can point me in right direction.

[Bricklayer]

Best thread I've seen so far complete list of parts, pictures, diagrams, just have to tee your permeate lines at membranes and take concentrate from one membrane and feed it into 2nd membrane. 330 gph Procon is good for 2 in series I'm sure.

http://mapletrader.com/community/showthread.php?29171-100-GPH-RO-Build-for-2-000-Pics-Video-Diagrams...-Oh-My!