A quick search would have given you most of your answers.
Good day
I want to purchase the aquaero 6 but have some questions
(1)
will the EK-DDC 3.2 PWM Pump Works with the aquaero 6?
Yes
must i connect the molex to the PSU and the pwm fan header to the pwm fan 1 output from the aquaero 6?
and is it controllable via the software ore must i purchase a Dp pump with aquabus from aqua
You can do that, or you can take power off the Aquaero as well. I run two DDC pumps this way.
(2) will the aquero 6 generate a PWM signal that i can connect too the MoBO pwm CPU Fan header, to avoid alarm during post boot? Kind regards
Just disable the alarm.