Drain pool and clean with muriatic acid
NO NO !! You must remove the vinyl completely and then check what substrate you have. Concrete plaster or brick will be fine.
Why in the world would you want to paint a marbelite or plaster pool?
20 year old marbelite pool How to refinish, paint or what Yes you can, There are many epoxy paints especially formulated for this purpose. See the link for complete instructions and video.
The plaster would not adhere to the liner. k
You should wait about 2 weeks before using a wheeled vac head OR follow the advice of the installer. He is the last authority on that subject.
plaster can NOT be pacthed but vinyl you could patch them with a kit but otherwise you have to buy another pool
That depends on the construction and finish of the pool.
It's better to patch over a pool patch than to try to rip or scrape it off. If it will pull up easily with your fingers, then you can remove it.
No, but you can buy a cheap patch kit at pool stores or other places to easily patch above ground pools.
Acid overdosing destroys total alkalinity which leads to etching of the Marbelite surface. Always dilute acidbefore dosing, and add to the weir while the pump is running
Yes, pool companies sell "Under Water Cement" and patch kits. If you hole is bigger than the usual patch, ask the pool company to sell you a piece of used liner.