Hi Aquatuning, I recently bought some stuff from Aquatuning.de (I order from the German portal so that my prices will be in Euro, as I'm in Ireland, not the UK) and I'm having some trouble with a pump and bay reservoir that I bought. Order #: 157416 placed on 10th April 2012, arrived on 23rd April via UPS Problem items: Laing DDC-Pumpe 12V DDC-1T Plus XSPC Laing DDC Ausgleichsbehälter Dual Bay 5,25" für 1 Laing Pump When operating while attached to the reservoir, the pump makes a very loud whirring/whining noise. The noise is not the kind of noise associated with air in the loop and it is just as loud when the reservoir is held away from the case; so I'm certain that it's not vibrational noise or a mounting issue. I attached an older spare DDC pump that I have to the reservoir to test it and the noise still occurs, though not as loudly. When the reservoir is tilted forwards somewhat, the noise is lessened; but the reservoir cannot be tilted like that while mounted properly in a chassis. Is there anything that can be done to fix this noise issue? It's not a minor problem, it's an irritatingly loud noise from the pump. In addition, the new pump that I ordered appears to be faulty. After about an hour of operation it stopped reporting an RPM value to the motherboard (from the blue tach. cable of the pump) and then soon after started to make an even louder noise than before while also emitting a burning smell; so I switched it off and removed it from the loop. I've only operated the pump with a full loop and with the reservoir filled, so I'm certain that it wasn't running dry or anything like that. Please advise me as to what can be done next. Thanks.