We've been the owners of our pool since 2009, but it was built in 2000. Judging from the stains from when we moved it, I don't think it was acid washed or replastered prior to 2009.
Today was our pool closing day, so in an attempt to be helpful, I started draining the pool, but then I got distracted by work and forgot to stop it until it was more than 6 inches under the returns on the deep end (and more than a foot under the returns in the shallow. I pretty much drained 3 ft of water from our kidney shaped pool. I've always wanted to acid wash the stains, but never did b/c i can't bring myself to drain the pool, but here we are. I called up the company that closes our pool and explained that I may want to do an acid wash. He explained that it would rough up the surface and I might want to consider a re-plaster given the age of the pool. He's coming by tomorrow to check it out and make a recommendation.
I should also mention that i think our Calcium levels have been low in the pool when we first moved in and I start using the TFT100 kit. I added about 40lbs of CaCl pellets to bring it up to normal levels.
Below are some pictures of the pool. Can you make a recommendation? I'm leaning towards a replaster so we can start fresh, but also not sure of the costs .. I was told acid wash is $875 and re-plaster would be in the thousands.. this was before he saw the pool, so I'm guessing the # will change when he sees the size. Also wondering if I should take the time now to enhance the pool, maybe consider adding special features to the plaster? blue/speckles? maybe start using SWG instead of straight Chlorine. It's not like we hit the lottery, but I'd like to do all the work at once and not worry about it later..
Image1b is a full pic of the pool - the grayish areas are the stains
Image4b shows you the steps, which are also grayish and brownish
Image5b is a close up picture of the gunite
Image7b is a rust stain from the kids leaving a metal water pail in the pool. I tried to scrape it off with a metal spatula. the rust stainr was darker, you can see the white discoloration is where i scraped it by hand.
Image 8 is the deep end of the pool, but shows some areas where it seems like a trichlor puck or something dropped into the pook and left there and bleached the area?
Aside from the rust stain, all the other stains were there before we were owners.
Thanks so much for any advice you might have!!