One piece of advise I can give with regard to the coolant you use is, in my experience, if your arent going for all out brute force performance such as heavy overclocking , etc… Then you really only need two things in your water cooling loop.

De-Ionised water (same stuff youd use to top up your car battery), and a smidgin of anti freeze to kill anything in the water and stop different metal loops eating away at each other.

Hope your loop stays runnin, anyone moving to getting wet is a good thing. lol

1. Use distilled water (i.e. pure H₂0) or a special coolant. Tap water can have all kinds of things in it that can help algae or promote furring, so it’s worth the extra few credits to ensure your machine is pristine.

If you can, take the opportunity to invest in a fanless PSU – this is difficult with some motherboard/xeon combinations so you may have to look around, but once you silence your cpu, your chipset and your GPU, the 2 thinsg left to be noisy are your PSU and your disks, and the PSU will no doubt make up 90% of that noise.