The only way is to shot blast it.
If it's never been painted and chlorinated rubber or epoxy pool paints are available in your area, that would be ideal. If not, water based pool paints are available but you'll want to ensure that proper prep, including removing all loose, peeling or flaking paint and sanding then priming if required. Check with the pool paint manufacturer. Many are designed to go directly over fiberglass or plastics.
a big one...
2 possibilities. First, if the previous paint wasn't rubber (ie epoxy), it will peel. ...or if this was the first coat, was it primed? Second and more likely, poor surface prep. Insufficient dry times before and after paint, acid residual, improper paint mixing, etc.
Why in the world would you want to paint a marbelite or plaster pool?
To remove excess rain water in an inground pool, you likely want to get a filter. You can also install a drain at the very bottom of the pool, but this will need to be closed if there were water in the pool for swimming.
Call Leslies' Pool supplies. They have paint, but it's about $100 a gallon. Good luck.
Remove decking material (concrete, tile, etc....) then the coping is screwed to the pool backing.
Call a local pool store and ask what they recommend in lieu of draining the pool.
Justin Bieber has a inground pool
form_title= Pool Paint form_header= Make your pool your dream with pool paint. What is the square footage of your pool?*= _  Is your pool above ground or in ground?*= () Above Ground () In Ground What color do you want to paint your pool?*= _  Do you need to remove old paint?*- () Yes () No
You can buy pool chlorine for an inground pool in Austin, Texas at your local Leslie's Pool Supply. They have a great selection.
A light acid wash should remove the chalk.
How big is the star dust inground swimming pool.
There are many places one can accquire inground pool covers. A couple of the places that one can purchase an inground pool cover is at Pleasure Pools and Backyard City Pools.
They will most likely work, they just have to have the same specifications.