Well the bios was set to shut down at 65 degrees C and it didn't shutdown so i dont think it melted. Someone turned it off about 20 - 30 secs after it burst.
Alchemy: I am no dupe, i was not home when this happened. The tubing was stretched/thinner at that point over the barb. I dont think it was a chemical corrosion because it was all fine for about 2 months. I thought the tubes would have accomedated the extra 3% volume (they were NOT brittle at all) but i also dont really know what happened.
well maybe i am a dupe for letting my girlfriend use my pc without telling her to turn the pump on