Help with water cooling 2 R9-290x OC 4GB

[Red Sea]

Heres the deal, never thought about watercooling until my latest build, processor is a hot one so got the hydro from Corsair and was very impressed at the temp difference, then saw online that these very hot graphic cards could be water cooled as well, I just got 1 back from Asus that the mb had burnt up in, dont know how but it was determined it was my fault, although the other one bought on the same day never had a problem, so bill for 160 was cheaper than buying a new one, which they sent me instead of repaired one.

Back to question, all I want in the loop is my 2 cards, I like the Hawaii from AquaComputer, but have no idea what I will need to do this, can anyone help?

Thanks in advance.


Also just to give some specs if you need:
Operating System
Windows 8.1 Pro 64-bit
CPU
Intel Core i7 4930K @ 3.40GHz 23 °C
Ivy Bridge-E 22nm Technology
RAM
64.0GB DDR3 @ 668MHz (9-9-9-24)
Motherboard
ASUSTeK COMPUTER INC. RAMPAGE IV EXTREME (LGA2011) 29 °C
Graphics
SHARP HDMI (1920x1080@60Hz)
4096MB ATI AMD Radeon R9 200 Series (ASUStek Computer Inc) 29 °C
4096MB ATI AMD Radeon R9 200 Series (ASUStek Computer Inc) 32 °C
CrossFire Disabled
Storage
2794GB Seagate ST3000DM001-1E6166 ATA Device (SATA) 28 °C
2794GB Seagate ST3000DM001-1E6166 ATA Device (SATA) 28 °C
1863GB TOSHIBA DT01ACA200 (SATA) 29 °C
465GB Western Digital WDC WD5000AAKS-00TMA0 (SATA) 27 °C
149GB Seagate ST3160812AS (SATA) 27 °C
931GB Western Digital WD My Book USB Device (USB (SATA)) 48 °C
Optical Drives
DTSOFT Virtual CdRom Device
ASUS DRW-24B3ST
ASUS DRW-24B3ST
HL-DT-ST DVDRRW GSA-H30L
Audio
Realtek High Definition Audio

Case: Corsair 900D Obsidian
Ultra 1600w power supply

Thinking about external radiator/pump/resevoir if there is such a combo large enough to cool both of these cards.

 

[Red Sea]

This just in:

Hello Red Sea,

We've noticed that the thread you've posted on Tom's Hardware hasn't received any responses. Perhaps it's not clear or explicit enough, how about taking a look at it to see if you can make it better?