Overwinter Plaster Blues

RodBlondel

New member
Jan 14, 2025
2
Southern New Jersey
Pool Size
28000
Surface
Plaster
Chlorine
Liquid Chlorine
Firstly I'd like to thank this forum. And sorry, for what will be a long post, but this is my first here. I just came across the forum not too long ago, and have lurked a bit - this community seems extremely supportive and helpful. Two years ago we purchased our house which happened to have an older, inground pool. The owners we purchased from never knew, and never found out, the actual year the pool was built. My guess is somewhere in the late 70s / early 80s. Either way, I had no experience with anything pool related, and this forum helped me at least get down the basics.

The pool's plaster was pitted all over, and I would constantly find plaster in the filters. It was livable but it was a nightmare to clean, and in desperate need of a replaster. It also had issues with the main drain, to the point where the previous owners epoxied it shut. Last winter we lost about half the water thanks to that epoxy failing. Since the water was half gone when we opened it we decided to finally have it replastered. By the time the work was finished it was mid July - I did my part by brushing twice a day, every day, and keeping the pH and other chemicals in check. All that being said we still were having some issues. White lines, and spots, some mild discoloration. Nothing disastrous, and no cracks, but annoying none the less. The pool company downplayed it as just some "cream on the top" that they'd could just acid brush out. And all that really meant was two guys coming over, dumping like ten gallons of acid in the water, brushing once, and then leaving. They told me to brush each day for a week, which I did, which literally did nothing. They then sent another guy out who said that grey plaster could be finicky, and that he was making a note of it in their records, and that it would eventually disappate on its own, over time. We also had them install a mesh (meyco) safety cover as well. Before I just used a massive solid tarp, which did the job as long as I pumped the water off the top of it.

That brings me to now. Since everything was new this year we paid them to close the pool and install the new cover. They did this right around mid October (we are in Southern New Jersey). I knew that plaster takes a while to fully cure, and I asked the company if this would be an issue when it came to closing and over the winter, which they said wouldn't. When the guys were out here treating and closing the pool, I asked a second time, what I would or should be doing for the new plaster over the winter - they assured me that I wouldn't have to do anything, and that they were adding all of the chemicals needed.

Earlier, I opened the corner of the pool by the skimmer to check and drain the level down a little since we had a decent amount of snow and rain. The plaster looks completely wrecked. I'm incredibly freaked out right now, and hoping someone here can tell me what's happening. I'm attaching some pictures below - the plaster now, and before they closed it. This is my first time with a mesh cover; is this just dirt and sediment from the snow and rain, or could it be settled chemicals from what they added? My fear is that this is build up / scale and cracking. This is also the first time I checked the pool - the weathers been bad and the covers often been covered with snow; either way it was naive on my part believing everything that the company said and waiting to check it. My regret is hindsight at this point.

I only have some Hach pool strips but it looks like:
pH= 7.2
Total Alk= 40
CH= Low, under 100
Stabilizer = Low, under 30
Chlorine is completely sapped

I didn't do any brushing yet, and to be honest, I don't know if I will. At this point my plan was to pay the company to open the pool so they can find it directly and go from there. If this is scale, and it is cracked, etc, I can see all of this getting ugly and them trying to put it back on me. Sorry again for the long post. I'm just freaked out, and am really just hoping that someone's dealt or seen this before, and it's just something simple. Thanks for any advice, info, etc - all appreciated.
 

Attachments

  • IMG_3952.jpg
    IMG_3952.jpg
    340.6 KB · Views: 25
  • IMG_3954.jpg
    IMG_3954.jpg
    292.5 KB · Views: 26
  • IMG_3959.jpg
    IMG_3959.jpg
    318.6 KB · Views: 26
  • IMG_3528.jpg
    IMG_3528.jpg
    594 KB · Views: 25
  • IMG_3524.jpg
    IMG_3524.jpg
    563.4 KB · Views: 25
  • IMG_3284.jpg
    IMG_3284.jpg
    474.4 KB · Views: 24
Welcome to TFP.

I think you will be fine. That looks like dirt or chemicals dropping out of the still water. Hit it with your pool brush and it should move and mix.

You cannot test chemicals in a closed pool with still water. The water stratifies into layers with different chemistry.

And you should trash those guess strips and get a good test kit - Taylor K-2006C or TFT Test Kits which is a better value.
Test Kits Compared

You cannot evaluate things until the pool is opened and water is circulating.

No one will care for your pool the way you will. Consider getting more involved in your pool care and not relying on a Pool Service.
 
Welcome to TFP.

I think you will be fine. That looks like dirt or chemicals dropping out of the still water. Hit it with your pool brush and it should move and mix.

You cannot test chemicals in a closed pool with still water. The water stratifies into layers with different chemistry.

And you should trash those guess strips and get a good test kit - Taylor K-2006C or TFT Test Kits which is a better value.
Test Kits Compared

You cannot evaluate things until the pool is opened and water is circulating.

No one will care for your pool the way you will. Consider getting more involved in your pool care and not relying on a Pool Service.
Thank you, this is a little peace of mind. I did not know about still water in terms of the pool chemistry. And yeah I know the test strips are unideal; the pool learning curve's been steep for me, and I still have a long way to go. Definitely was not fully prepared for the financial upkeep, but have also learned to spend the money now or spend even more later. Either way appreciate the insight!
 
Hi Rod

The advice you were given above is sound advice. Hopefully, when you open in the spring and get everything cleaned up, your plaster will look better. Remember, all plaster will have streaks and spots that don't look even.

As to the expense of pool ownership, that can be minimized by taking care of your pool yourself. As a "Newbie" I believe in having the pool closed by a "professional", just because of the liability of the pipes freezing if there's an issue. But, YOU can do everything else yourself with the help of this GREAT forum. The first thing you can do is get your own test kit linked above(I have and recommend the TF-Pro). It may seem overwhelming at first to test your own water with the kit, but after a couple tests, it gets way easier. If your guess strips are even close to accurate, then you may need to add Calcium and maybe even Baking Soda. Once balanced, your water should only need Muriatic Acid and Liquid Chlorine. If you want to truly make pool care easier, then you should consider adding a Salt Water Chlorine Generator(SWCG). I was once like you and used Liquid Chlorine, but once I switched to the SWCG, all my Chlorine is generated automatically, and pool care is a breeze. There is an upfront cost, but it is well worth the investment. Think of the SWCG as buying ALL your Chlorine up front and not having to lug jugs of Chlorine around all the time. I just keep a bottle of Chlorine on hand if I ever want to bump up my levels for a party or other reasons.

We, in the Northeast are getting closer to Spring everyday, and soon enough, those covers will be coming off our pools!!
 
Thread Status
Hello , This thread has been inactive for over 60 days. New postings here are unlikely to be seen or responded to by other members. For better visibility, consider Starting A New Thread.