Originally Posted by
Kayin
The only cases I know of full on nickel corrosion/deplating happened with very poor quality plating. I got hit with it, after all. And the mode of failure wasn't the nickel itself-the copper was corroded under my nickel, suggesting that pinholes in the plating were to blame for the effect. Around here, even with RO or DI if your loop even is in the same room with sunlight you're gonna grow stuff. I always used potassium permanganate until I switched to silver-and I even ran nickel blocks with a silver-based nanofluid. I do not dispute the placement of nickel vs silver, that's basic physics, but I'm wondering if with the average lifetime of one of our loops that it's not long enough to make as much a difference.
lowfat, I think you're still right to be concerned. I don't have test parts or any of that any more, nor will I be reacquiring anything, so I won't be guinea pigging this one. I think the only way to prove it is a torture test, and I'm unclear as to how to set that up here. While I'm not sure it would be a problem, there is still the worrying fact of the galvanic series placement of those two metals. Only time will tell if it stays OK.
As far as for me, I wish there were slots in the bottom half of the economy fittings for a wrench instead of a hex in the inlet of the barb. Every bit of flow counts sometimes.
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