Been there! The trick is to watch it. Sorry.
If you drain too much then the pressure from the groundwater outside of the pool can cause the liner to float. If you don't drain enough, and water gets too high above the "bead" (where the liner goes into the coping), and the groundwater recedes, sometimes water can seep behind the liner although that is more rare. Remember how I had you add water to the skimmer as you drained off the cover when you first started out? Same principle re: hydrostatic pressure.
Don't drain too much below mid-skimmer. I hope it is not lightning out. Been there too....
I will be on-line for a bit so keep in touch if you have any questions.
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Also, you can put your submersible pump on the deck to draw water away from the pool. I THINK you have a submersible, but I could have a faulty memory.
If you drain too much then the pressure from the groundwater outside of the pool can cause the liner to float. If you don't drain enough, and water gets too high above the "bead" (where the liner goes into the coping), and the groundwater recedes, sometimes water can seep behind the liner although that is more rare. Remember how I had you add water to the skimmer as you drained off the cover when you first started out? Same principle re: hydrostatic pressure.
Don't drain too much below mid-skimmer. I hope it is not lightning out. Been there too....
I will be on-line for a bit so keep in touch if you have any questions.
- - - Updated - - -
Also, you can put your submersible pump on the deck to draw water away from the pool. I THINK you have a submersible, but I could have a faulty memory.