So I can’t figure out what this is. Been getting worse over the past 5 years. I figure it was calcium carbonate, so I tried a cut mixture of Muriatic acid and water 4/1, got fizzing for a minute in a couple places but it’s still there. I read calcium silicant won’t be affected by acid. I am guessing that’s what I am dealing with? Suggestion? Thanks
White stuff on spa spill over stone
- Thread starter Titan7
- Start date
- Jul 21, 2013
- 53,927
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Either waterline scale or Efflorescence - Further Reading or both.
You probably need Kierserite Bead Blasting to clean it up. @JoyfulNoise can tell you about it.
www.troublefreepool.com
You probably need Kierserite Bead Blasting to clean it up. @JoyfulNoise can tell you about it.
Waterline Scale Removal - Further Reading
www.troublefreepool.com
- May 23, 2015
- 24,538
- Pool Size
- 16000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Do you use any dry acid? Or any other chemicals other than muriatic acid and liquid chlorine (I know you have an SWG but some LC use of the winter months is typical).
- May 23, 2015
- 24,538
- Pool Size
- 16000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
It’s probably just a mixed calcium and magnesium scale (“mineral scale”) that has embedded into the porous stone work. I would recommend kierserite blasting but only if the technician/contractor knows what they’re doing and is familiar with the material. Unfortunately kierserite is magnesium sulfate which means if they use a lot of then you’ll get a fairly high dose of magnesium and sulfate in your pool water. That’s not very good for a pool with an SWG. The other option is glass bead blasting but contractors hate that because it means lots of clean up to remove all the glass media.
No easy or cheap solutions sadly …
No easy or cheap solutions sadly …