like i said.. it wasnt the water doing this.. it was the additives, the additives made the bubbles AND the black stuff... the black is basically an anodizing to protect it... the only time it is bad is durring the first few days it is forming... if you let your stuff sit in a still mixture, bubbles will form and eat little pits into your aluminum, ANSWER= keep your pumps on for a week or 2 when you get new aluminum parts.
with tap water, if your aluminum is corroding you will get this white milky stuff collecting around the aluminum (when i first saw it i thought something had fallen in my cup (even though it was covered)
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