Salt creep is the short-range evap on lines and tank edges, usually on the tank rim. It really doesn't get too much further. Swipe a wet finger across your wall some distance away from your sump. Taste it. If there's salt, that's a problem, but if not, it's not in the air.
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Sk8r
"Make haste slowly." ---Augustus.
"If anything CAN go wrong, it will, and at the worst possible moment."---St. Murphy.
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