I've had my watercooled rig for two years now. I'm going to be doing a small upgrade to my processor and CPU, and since I'm taking everything apart I think it will be a great time to clean everything up (plus change water again). Anyway, what do you guys generally do to clean out your water tubes and pumps? I was thinking of running vinegar through them for about an hour, drain it, run water through it, drain again and then proceed to refill it. Anyone ever try this?