Getting Phosphate Buildup on Pool Wall

[honeyland]

Hello all,
I have a large tile wall above my pool where the jacuzzi spills into the pool. The tile is 4in cobalt shiny blue. There is a buildup of phosphates and other minerals on many of the tiles. Every year I scrape what I can off and use a chemical like CLR. However, the wall is vertical and so the chemicals do not stay on the tile long enough to have the CLR soak in. They just run down into the pool. I have even tried to us a dremel with a wire brush attached to no avail. Any ideas?

 

[Texas Splash]

Probably best if you could post a pic or two of the stuff you are seeing on the tiles. I would also recommend posting a full set of water test results so we can evaluate the water's propensity to accumulate certain items (i.e. algae, scale, etc).

 

[Texas Splash]

Also at some point be sure to update your signature with all of your pool and equipment info. Include your test kit as well. See my signature as an example. If you're on a phone, you may have to turn it sideways to landscape to see what I mean.

 

[honeyland]

Probably best if you could post a pic or two of the stuff you are seeing on the tiles. I would also recommend posting a full set of water test results so we can evaluate the water's propensity to accumulate certain items (i.e. algae, scale, etc).

Will do. Currently out of town but will post pictures when back in town. Thanks.

 

[JamesW]

Efflorescence - Further Reading

www.troublefreepool.com

 

[JamesW]

There is a buildup of phosphates and other minerals on many of the tiles.

How did you determine that it was phosphates?

 

[Toxophilite]

For the runny tile cleaner issue, someone here put me on to this gel! Sponge on and stays put till rinsed. https://www.amazon.com/3X-Chemistry...&sprefix=gel+pool+tile+cleaner,aps,123&sr=8-8