ACfluid active
ingredient.
While i certainly advocate non mixed metal loops some of the posts about mixed metal loops are a bit dramatic. I don't think mixed metal loops are needed or desirable nowadays as almost anything is available in all copper or Delrin versions.
Yet a properly designed and maintained mixed metal loop will not cause any issues, my longest serving loop was in mint condition after 4 years of service with G11 as well as a system that ran for 2 year with G12+. Even without additive and protective coating the aluminum parts of the unit appear rather solid to me, 1 mm+ will will take some time go from cosmetic to structural impact.
Are Aquaduct buyers capable of properly maintaining the system? That is where i see the problem.