I have a Zalman LQ1000 case that has built in water cooling. Most of the time it works fine but I get a build up of particles in the coolant/water solution that clogs up the flow indicator impeller which causes the case to beep and flash when it thinks that the water flow is too low (thus I don't trust my PC left on unattended for long periods). I am using the supplied Zalman coolant diluted with de-ionised water as distilled water is not readily available in the UK. I suspect it is the water I am using that is causing this problem.
What is the best coolant to use to prevent this build up? Will it happen regardless of what I use and will just have to get used to flushing the system regularly?
I came across this thread "Water Cooling problems - a sitrep" on TechSupportForum which describes my problem quite well. Seems that it could be caused by the Zalman Coolant rather the the type of water used.