Here's what happened: I've been noticing green buildup in my loop, and as my overclock attempts on my Core i5-3570K haven't gone so well, I decided it was time to RMA my motherboard (for reasons unrelated to overclocking) and flush out my system. Today I finally tackle the challenge of putting everything back together and...whoa there's quite the visible colonies living / dead on the pump, and under it. I bought new tubing once hot water couldn't flush out the gunk, and now I wonder if I'm going to have to buy a new pump, or is the whole kit just ruined by organic contamination. Today I've tried running the pump full of hot filtered water for 45min at a time, plus filled 20%-50% by 90% isopropyl alcohol: if it wasn't dead before it probably is now. Even with all that, the colonies / remenents just aren't coming off well at all, and I don't think I can actually take apart this type of preassembled resovoir + pump. And even if I could, I'd probably have to take apart my two waterblocks (CPU+GPU) and thoroughly clean them too, to get rid of the infestation. Though I used a single Killcoil with distilled water and later added some isopropyl alcohol in my loop, seems I probably screwed up royally...and now I still have no desktop, since I can't find my old air coolers.
So is this Rasa 240 kit worth saving? My GPU temps were usually pretty good, around 60C max before I think the VRMs started to overheat (on my 4GB GTX 680), while my CPU was only average...leading me to believe that I never did mount the waterblocks exactly right as my main problem. But as far as gunk leftover in the loop: should I just fire it up and leave it in there until I can afford a proper cleaning of the whole sysyem, or should I give up and get something like the Corsair H100i? (Air cooling was even more trouble than this)
I'm hoping to have this sorted out in the next few days, as my tablet also recently died, so now I only have my (thankfully rather advanced) phone to do my IT work on; it's been almost 3 months now without my desktop.