Scale/Calcium Any ideas

rellumd

Well-known member
Jan 15, 2010
54
North Dallas, Texas
Pool Size
28000
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Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
I am seeing a build-up of scale on the tile Spillover from my Spa. It is almost 100% on one side (which gets the most sun). I have brushed, pick at it with a plastic knife that chips pieces off. Any ideas on how to tackle this? CLR?

Thanks
 

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ajw22

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Jul 21, 2013
29,060
Northern NJ
Pool Size
35000
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Chlorine
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Pentair Intellichlor IC-60
That is efflorescence from water getting into the small grout cracks on your spillover, getting into the shell and behind the tiles, and coming out the grout lines.

I will bet the builder did not put a waterproof coating on the shell before the tiles were laid.

1626430671428-png.355575


 
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cowboycasey

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Jul 3, 2013
8,648
Southern OK
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CircuPool SJ-40
I agree, it is getting behind the tile and grout somehow.. You can chip it off and use some 1/2 water with 1/2 muriatic acid sprayed on it and then scrub it with a brush... :)
 
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