Custom PC Watercooling and Fan control system. Fan control help?

Some additional information:

Case is a NZXT Phantom original. http://www.nzxt.com/product/detail/34-phantom I plan on re-purposing the space currently used by the built in fan controller.

Pump is a EK DCP 2.2 12V pump. EK-DCP 2.2 (12V DC Pump) – EK Webshop

Fans are Corsair Air Series fans. CORSAIR Site Maintenance