No
that depends on what you spilt, you did not mention that.
It depends on what caused the stain to begin with. In my case it was copper because the pool was constantly auto-filling due to a leak. Metal stain remover treatment, followed by an extremely powerful shock cycle helped return my pool to normal.
To remove a fireworks stain from the bottom of a vinyl pool liner, first, brush the stained area gently to loosen any debris. Next, create a paste using baking soda and water, then apply it to the stain and let it sit for a few hours before scrubbing with a soft brush. Rinse the area thoroughly with water. If the stain persists, you can try using a commercial vinyl pool liner cleaner following the manufacturer's instructions.
terpentine should do the trick
Air bubbles in the water....
There are many places where one can buy a pool liner. One can buy a pool liner at popular on the web sources such as Liner World, USA Pool Pros, and National Pool Wholesalers.
Any pool can have copper. Source water may have it in it. Some pools have copper plumbing. Most pool heaters have copper heat exchangers. If your pH or Alkalinty levels are lower than recommended, then the copper in the plumbing or heater can be stripped out and stain the pool plaster a bluish-green color. Some allgaecides even use copper which will also stain. You should also take care using copper algaecide in salt water pools as they may cause problems with the chlorinators.
The pool liner pad is placed underneath the pool liner to prevent items from cutting through the liner. If the liner is already leaking, the liner pad will not stop the leak.
by taking the liner away!
As far as I can tell, it is not structurally harmful to vinyl pool liners, but can fade their coloring. The first year I had a pool, I made the mistake of dumping 1/2 pound of calcium hypochlorite (bleach) in one spot in the pool, which caused the liner to turn from blue to white, but did not cause it to leak.
A lower pH will erode a copper heat exchanger in a heater very quickly. I will also then, increase the copper level in the pool water and will make it difficult to add pH increaser or TA increaser. Both chemicals will stay out of solution. Once they do deslove the copper drops out and the will stain the liner black. The best solution is to keep an eye on your pH especially when you have a heater.