This sucks

I just installed a new 6990 with the EK FC nickel block and now I'm worried whether or not I'm going to run into problems. I didn't bother breaking the seal and look at the internals because at the time I thought the seal meant your block warranty would be void, and not just the "seal" warranty. Either way, I'm running distilled water with a biocide in my loop. No killcoil and no other additives, with Primochill LRT tubing. *knocks on wood* here's hoping I don't run into any major problems!