I hope someone has a solution for you, but it states in the manual that the 2-pin PWM connectors are NOT compatible with PWM fans/pumps:
4.4. Connector “PWM 1/2”
Pulse width modulated 12 V outputs, maximum current load 1 A, carrier frequency15 kHz. Suitable for example for 12 V LEDs, not compatible with PWM fans or pumps.
Perhaps you can run one set of tans from the AQ5 and the second set of fans from your motherboard, but if you want to use the aquasuite you may need to spring for a
quadro or
octo.