Hicks helped me out alot on the electrical as I've said before also . I was thinking a pump like one of the Iwaki aquarium pumps would make a great flow booster:
http://www.marinedepot.com/ps_ViewIt...%20(1500%20gph)

Behind the CPU blocks and collection res. Even on the most powerful pumps out of that selection seems like it produces less than 15psi so with the placement the CPU blocks should be safe?