
I have been building water cooling systems for 15 years and wanted to share my experience with PrimoChill Utopia. I tried this supplement as I had more nickel blocks and didn't want to risk using blue vitriol. First impressions were that the solution made the liquid foam/bubble, which didn't bother me. A week into the cycle (properly cleaned and flushed prior to installation) a white build started and my GPU block was corroding. Primochill should act as a biocide and anti-corrosion additive. The two things he promotes failed miserably. My new blocks are damaged and everything on the STEG tubes is covered in white spots. I don't recommend you to use this, at least if you have mixed metals (copper, nickel and brass). Check out the photos of my rusted GPU block and how Utopia colored distilled water looked when I washed it off after a week of use.

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