That is one of the most hideous build-ups I have ever seen...especially from a 'respected' brand of coolant additives.
Makes me want to go flush my system again, just for good measure...I think he should have soaked in vinegar and salt like the one guy suggested. However, I don't know how reactive vinegar and copper are or what damage that might cause.
I think its a good idea then...I don't have crud like that when I flush my system and pull apart my blocks...but dang. Every once in a while you can find a little crud in a rad, but usually very minimal.
That is pretty disturbing. I've never set up a water cooling system before, but by the looks of that, it wouldn't be fun to maintain that mess. It's odd a company would release such a product which can totally fail while under heavy stress. What is the best coolant to use for a water cooling setup? After all, my case does have holes in the back for tubes.
EDIT: Ranomizer has a pic of that smug little cat there, too. Makes me laugh every time i see it.
Easy. Distillled water and Petras PT NUke/PHN Nuke or an Ians Silver Killcoil. All you'll ever need. No UV bling color, no color, no hassles. Drain every 6 months, full rebuild once a year. At $1 a gallon for distilled, PT at $7 and the bottle will last for 15+ refills or the Killciol which lasts forever, pretty cheap eh?
You want color you can buy colored tubing and/or UV colored bling tubing.
Setting up and maintaining a water loop isn't nearly as bad as you think. I rarely touch mine except to purge, clean and refill couple times a year. Yeah, it takes about a weekend to pull all the blocks, clean the rads and blocks and then refill/purge air. But, if you do it right, you really don't have to touch it until its time to do it again.
The honest thing is (speaking from experience) UV tubing works a lot better with clear distilled than it does with coolant additives...i.e...it glows a lot better because the clear water reflects inside the tubing and it 'glows' more.