I have a Corsair Nautilus 500 which uses a Laing DDC-1TP.

A couple of questions:

1. Is the noise level pretty much the same (running at the same volts) with all of the DDC pumps?

I'd like to replace it with a quieter version if possible.

2. It's mounted upside down in the external case. Is the noise level or wear and tear affected more when it's mounted that way?

Here's some pics of the external unit from a review:
http://www.madshrimps.be/?action=get...19&articID=457

The author speculates on question #2 but didn't confirm what Laing might have said.

Unfortunatly it doesn't look like I could add any of the tank mods as it's pretty tightly installed there.