may be more easily damaged than the surrounding tank surface.
If the stain does not come away with gentle cleaning, it is better to identify the cause than to keep increasing the strength of the cleaner.
A plumber can help determine whether a persistent deposit is simply mineral buildup or a sign of corrosion or a failing component.
7. Did the Vinegar Help With the Musty Smell?
The original account also described a noticeable reduction in a musty odor after the cleaning treatment.
That is possible if the smell was
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