How do I remove thick white line at tile

aridpaul

Member
Oct 8, 2007
15
Phoenix, AZ
How do I remove a 1 inch wide white tile line. I have already tried the pool pumice stones. That just seem to make it worse. The pool is 3 years old with a pebble fina finish.

Thanks
Loraine
 

duraleigh

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Apr 1, 2007
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Sebring, Florida
Paul,

Welcome to the forum. How did the stain get there? Without a pic, it sounds like calcium deposits.....muriatic acid is the cure.

If we knew more about how it got there, what you think it is, or a picture, we'd be better able to help.
 

aridpaul

Member
Oct 8, 2007
15
Phoenix, AZ
It is definitely mineral deposits. It was fine the first 2 years of pool ownership. This year we had only one rainstorm in the summer. FYI I am in Phoenix. We had over 32 days of 110 degree weather. I don't know if that makes a difference or not.

Paul and Loraine
 

duraleigh

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Muriatic acid will remove it.

More importantly, it sounds like your water has experienced high pH for a time to allow that much precipitate. Do you have a set of test numbers you can post?.....particularly pH and Calcium Hardness?
 

dawndenise

Well-known member
Jun 30, 2007
79
North Florida
Don't know if it's the best way, but when I clean mineral deposits, I use a quart-size trigger sprayer bottle. I use a 4 parts water, 1 part muriatic acid mixture. Some people start with more water (less dilute mixture). I make up about a cup of the mixture because that's usually more than enough for the few areas I need to treat. Always add acid to the water in the sprayer, not the reverse. I don rubber gloves and eye protection and hop in the pool. (What a sight, I know!! :roll: )

You can wait until you're in the pool to add the acid to the water in the sprayer...that way there's not really any concern if you spill a bit...it just lands in the pool.

Then, I spray a small area, let it bubble on the surface, scrub with a hand brush. Repeat as necessary. Rinse the area with pool water when you're done. When everything's done, I empty any leftover mixture into the pool and use pool water to rinse out my brush and sprayer, including the trigger mechanism. Then I take a nice relaxing swim as my reward :-D