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Re: New to pools, opening a black/brown pool, just got my test kit, now what? In DFW, I've found the cheapest to be at Walmart (Great Value) or Costco (Clorox) at around $3.05/gallon for 8.25%. If you use the 12% variation, be aware of the manufacture date codes. As it'll go bad quicker than...

Thanks for that, I think the # of small metal stains are so few that doing the sock method on each stain will probably be easier than treating the entire pool with ascorbic acid. For the dirt looking stains ringing around the base of the wall, is pumice stone safe for scraping all of that off...

Just passed the overnight free chlorine test. So all is good there.. pH is 7.3 Any thoughts on stains?

So the water has always been crystal clear. Never had any issue with that. A quarter jug of acid brought the pH down to normal levels. Always seems to be a battle for FC and pH due to also having a spa waterfall down into the pool. If I have enough time, I'll adjust chlorine and pH on the same...

Doing a bunch of searching on Google Images came up with this post. Looks to be pretty close to my stain that essentially is a ring at the same depth all around the pool. If it is what the poster is stating, then I'm probably not going to be able to remove it? Gray Mottling Plaster Discoloration

So I put a rubber band around a tri chlor puck tied to a string and laid it out on all the stains. The dark ones where the floor meets the wall, the small orangish ones, and even some other random ones in the spa that were yellow-ish or a darker gray/black. Not sure exactly how long I was...

Hello Everyone, Recently purchased my first house with a pool, and been using this site a ton trying to learn as much as I can. So far so good in keeping up with general maintenance, but there are a few things on the walls/floor that I'm unsure how to remedy. Pool is appx 16,500 gallon gunite...