Water in loop not flowing. What's wrong?

[dangrousperson]

Hi. I just finished the assembly of my first waterloop. There is a thread about it here:
http://www.tomshardware.co.uk/answers/id-1798073/time-watercooling-selected-parts-handle-job.html

Now when I filled up my reservoir and turned on my pump, it drained my reservoir rather quickly. I repeated once or twice more. But now my reservoir is no longer draining. Problem is, the water in the loop is not actually flowing.
Here is a pic of my setup:

The loop goes:
Res/Pump-Rad-GPU-GPU-CPU-Rad-Rad-Res/Pump
I have:
Alphacool Reservoir - DDC pump combo
2 x 140mm Phobya G-Changer Rad
Alphacool HF 14 GPU Universal Copper Edition
Aquacomputer 7990 fullcover
Alphacool NexXxoS XP³ Light CPU Block
Alphacool NexXxoS XT45 Full Copper 240mm

I have tried tilting my computer in every conceivable direction. I shook it, but nothing helped.
Can anyone help? Alternatively can someone in the region of Hamburg, Germany that is an expert in watercooling come and help? I will pay 30€ if someone comes and solves my problem. Just PM me.

 

[expl0itfinder]

Where is the reservoir located?

 

[dangrousperson]

Where is the reservoir located?

Where the orange tubing is going in the 5.25" bay. Should it be higher?

 

[expl0itfinder]

Yes, the reservoir needs to be the highest part of the loop.

 

[dangrousperson]

Yes, the reservoir needs to be the highest part of the loop.

After letting the loop sit, no power to the pump, for about 2 hours, it is now working. There is a nice constant flow of water.

About the reservoir having to be the highest part of the loop:
I thought the rule was: the reservoir needs to be higher than the pump. Since I have a reservoir/pump combo, it doesn't matter.
Anyway. The water is flowing now. Should I still place the Reservoir higher?

Since this is my first loop, I didn't know that you had to clean all of the components before use, I thought it was just the radiators that needed a rinse (which I did). But now my water is rather cloudy. What would be the best way to drain the loop?

Lastly, the DDC pump is rather loud. Is this something that will change after running the loop for a while. If it doesn't change, will running the pump at 7V still be enough for my loop? How exactly do I change it to run on just 7V?

Thanks a lot for your help. Much appreciated.

 

[expl0itfinder]

The noise levels should go down. You should let the loop run for at least 24 hours, and by then, the noise should subside. I would still raise the reservoir a little, as it is pretty low, and rather be safe than sorry. I wouldn't worry about the cloudy water unless the pump stays noisy after a 24 hour run, or performance is not up to par. If it is still noisy, then you want to empty the loop, clean it, and start again. Also, make sure there are NO air bubbles in the loop.

 

[dangrousperson]

The noise levels should go down. You should let the loop run for at least 24 hours, and by then, the noise should subside. I would still raise the reservoir a little, as it is pretty low, and rather be safe than sorry. I wouldn't worry about the cloudy water unless the pump stays noisy after a 24 hour run, or performance is not up to par. If it is still noisy, then you want to empty the loop, clean it, and start again. Also, make sure there are NO air bubbles in the loop.

Thank you for your quick answers. I will see what the noise is like after 24 hours and report back. I will probably raise the reservoir as well.
I will then run a couple of stress tests and report back with the temps.

Thanks again expl0itfinder