White powder swirling & crystallizatio

Stains on the pool surfaces, pool equipment
or on the swimmers, or off-color swimming pool
water. Discolored but clear pool water.
Lila

White powder swirling & crystallizatio

Postby Lila » Tue 17 Mar, 2009 11:18

White powdery substance was swirling around in pool water, settling on surfaces. WE emptied pool last night and the surface looked as white as snow. The surface when washed off feels like sandpaper - or crystals that stuck. We tried sand paper that does remove it, but not the white discoloringl Hand sanding is beyond us in a 5500 gallon pool. This happened just a few days ago, but there has been a white discoloring at the water line for a long time. The surface of the pool is of new glass tiles from China, not the ususal ceramic tile. Is there some chemical to dissolve this? Any help is greatly appreciated.


Guest

White powder swirling & crystallization

Postby Guest » Wed 18 Mar, 2009 00:49

DON'T sandpaper the tiles. You will end up scratching the surface and so you will prepare the ideal enviroment for algea to catch on and grow in.

Acid will dissolve the crystals.
User avatar
Larry
Pool Forums Admin
Posts: 371
Joined: Thu 09 Dec, 2004 20:19
My Pool: Inground concrete 72m2
Tiled overflow pool
2 Hp pump mono
Fiberglass sand filter 920mm
Tiled deck

Scale & crystallization

Postby Larry » Wed 18 Mar, 2009 05:20

Hi Lila

The best way to get rid of the calcium/ scale buildup is with an acid wash. Your pool is relatively small at 5,500 gallons so it should not take longer than an hour or so.

The basics of an acid wash are:
* brush diluted liquid acid (muriatic or other) over the tiles
* rinse immediately

Use the acid undiluted if the diluted acid is too slow or doesn't froth and foam much. :idea:

Always wear a mask and never work alone! :!:

Larry
Pooltown Pros

Scale and acid wash

Postby Pooltown Pros » Wed 18 Mar, 2009 13:55

Yeah. A little 5.5k gallon pool won't take long at all to acid wash.

You might consider calling in a pro to do it. Being a quickie should keep the price low and you avoid the health risks of doing the job yourselves.

Ron

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