I currently have an above ground pool 15' wide 4' deep and i use a chlorine bouy which i take out when not in use.
Muriatic acid. potash or bicarb, possibly algaecide, chlorine, stabiliser.
I use the Baqacil pool liner cleaner. It's actually a gel containing hydrochloric acid..works well with a little scrubbing.
There are special vacuums designed for this. They suck up the water from the bottom and filter it.
Check with the manufacturer
Have you tried Muriatic Acid or Bleach.
To clean algae from a vinyl pool liner after it has become crystallized, use a solution of bleach and water with a scrub brush. One cup of bleach for every 5 gallons of water should be enough to clean the vinyl liner. Rinse well, then let dry before storing the pool.
There are a number of ways you could remove stains from worms on a vinyl liner. You could use cleaners.
no on paint! You will need to replace the liner.
No
How are you planning on making the pool water tight? If you want to use a Vinyl Liner, you should consult the dealer you are planning on ordering the liner from. A lot of Vinyl Liner manufactures will not make a liner for that pool.
The answer is yes, but you must use the same product used by the manufacturer. Be sure to use swimming pool gel coat with a coating of vinyl ester resin first. Life expectancy will be about 20 years.
Vermiculite
One of the biggest fears that most pool owners have when it comes to their vinyl pool liner is discovering a rip or a tear in it. The fortunate thing about holes in vinyl liners is that they are very easy to repair. http://www.pondpro2000.com/epdm-pond-liner.html
Yes, replace the liner. Nothing can put the color back into plastic or vinyl or glass or steel.
Vinyl Liner
No they are no to hard to clean. You can use a presure washer.
No! it well rot, use pool wall foam..