Fiberglass Pool Question

[BDCraig]

Greetings from South Texas!

Had a fiberglass pool installed less than a year ago and I am very happy with the results. Water chemistry is on point as well. The issue that I am having is that after the concrete and grout fully cured, I noticed some white streaks that appear to have leached from the grout onto the side of the pool in various locations.

Any idea as to how I can safely remove the unsightly stains?

Thank you in advance for any advice.

Brian

[PoolDoc]

Upgraded your membership.

You are welcome to read the stain-removal guides here. Obviously, I have some ideas about how SOMEONE can "safely remove the unsightly stains". Unfortunately, about a decade of experience suggests that while I can remove stains using those methods, you can not, if you are like about 99% of the other users at PoolForum.

Worse, fiberglass stains are something of a special case.

If you want useful help, you'll need to do all of the following:
Get a K2006 testkit (or the TFP copy of my old PS235)
Test BOTH your pool water AND your fill water.
Take good photos of the stains and post them to Google Photos or some other service you can link to.
Post ALL the info -- pool photos AND test results -- here and to TroubleFreePools


Look for responses that start, "I had stains like that, and I did X". (That's why good photos are so important!) You can probably ignore all the other responses and especially those that begin "If you do Y, it might work . . ."

BUT, the reason most stain removal fails is that removing them is one thing; managing the problems that CAUSED them is something else. Lots of people succeed in removing them briefly.

Good luck!