Re: White splotches, spots, and lines (stains/fading?) in 3 year old fiberglass pool
Is your pools gelcoat by any chance blue? Blue fades. Period. It can happen in as little as 2 or 3 years if your pool get a lot of sun. That is why someof the fiberglass pool manufacturers don't warranty the blue gelcoat for very long.
There are some pics on this page:
http://www.thefiberglasspooldepot.co...iberglass-Pool
As Pooldoc said, Calcium chloride is extremely soluble in water and other calcium scales (carbonate, silicate or phosphate) will feel rough. Only the first will respond well to acid. The others are more difficult to remove.
Retired pool store and commercial pool maintenance guy.
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