What you will see when I finally start selling the G5's is an EXTREMELY strong recommendation from me to avoid any use of aluminium in your loop. Don't even bother trying to control it with corrosion inhibitors. You probably can control it with enough effort, but it's just asking for trouble, and you will probably need to replace the inhibitors fairly regularly, such as every 3-6 months. The silver will eat the aluminium very rapidly, and if the aluminium is anodised, then its anodisation better be perfect, or it will find any weakspot and start eating it even more aggressively than copper does.
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