He got it loose pretty easily. All you have to do is get some water behind the tarp and it will come right out. Push the edges below the water and water will get behind the tarp as you begin to peel it loose.Seemed to get stuck for the OP if you read through the whole thread. He used the word glues for like 10 minutes.
Of course....equalizes the pressure on both sides of the tarp.water will get behind the tarp as you begin to peel it loose.
Now that is just the coolest thing!.... you could see when the pump started draining the deep end faster and the chair on the tarp starts to move as the tarp sucks in... I kept waiting for the part where you threw away your underwear.Here is the full time-lapse of the entire process. Thank you all for your support over the years.
I was thinking prepositioning a hose in the deep end to act like a pressure relief at the end of the process. When you are done draining (sucking) the water from below the tarp, you can then start filling the pool with freshwater under the tarp to break the seal.For future, if anyone wants to duplicate this, and is concerned about the tarp getting stuck, here is a though that popped into my head.
Put something, maybe a 1 gallon plastic bucket under the tarp in the shallow end, near the steps/edge. This way if it ever gets stuck, you have a very accessible area where you can cut with a knife if you absolutely had to, and no worries about puncturing the liner underneath.
Or , put some sort of reinforced (so it wont collapse) hose under the tarp and leave exposed on the surface. If it gets stuck, you can hook up to a compressor or whatever to blow air under to break a seal.
So the question I have is, did this fix your iron stain problem? I keep thinking any day I’ll see those dreaded stains come back.I did this same method this Spring to do a water exchange right after AA treatment for iron. It was a lot of work but it actually worked out really well. Do not try this unless your tarp has a good 10 feet of extra width/length on all 4 sides. I had to shut off my pump periodically to allow my "surface water" from the hoses to catch back up. I also had to pull on the tarp to keep it firm without a bunch of crazy wrinkles. I had the hoses only in the shallow end to push the old water down to the deep end. When I could see the tarp getting near the main drains in the deep end, I shut off my pool pump and used the winter cover pump sitting down the sides to suck out the rest. I did not have any tears and I was able to get 99% of the water out without mixing.
I wish I had taken some pictures like you did but this method does work for a water exchange if your tarp is large enough and you have a lot of spare time to micro manage it all. As stated before, allowing the water to mix a bit and settling for 75-80% water exchange is probably more practical for most people.
The iron stains will come back and I do an AA treatment with water exchange every Spring. This was the first year I did the tarp for the water exchange so I would hope a 100% exchange would be improvements over previous years but my city water has iron in it. So good so far but I can see/notice very minor color on my fiberglass steps since I am paranoid but my wife can't tell. End of the Summer will be the big test. This year is also the first year I have kept polyfil in the skimmer continuously, changing it out once per week. I am also not using any metal sequestrant since I want the iron to precipitate on the polyfil.So the question I have is, did this fix your iron stain problem? I keep thinking any day I’ll see those dreaded stains come back.
I think I have iron stain PTSD.
If you ever used Clorox salt then that is the likely source of your iron... Like mine.Ok. My city water does not appear to have iron in it as tested by me, tested by pool stores and tested by an independent lab I sent water samples to.
My next door neighbor has a liner pool as well and he’s never had the iron stains like I do and we’re obviously on the same city water. His pool is close to 10 years old.
It’s only been a week since I replaced the water so it’s way too early to tell.
I believe once or twice I may have used Clorox brand salt but from then on, I only used Aqua Pure salt. But I guess the damage may have been done. Honestly, I’ve never really figured out where the iron came from. It’s part of the reason I keep thinking it may come back. All my previous theories and remediation attempts have failed.If you ever used Clorox salt then that is the likely source of your iron... Like mine.