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.
First, find out what the stains are. Iron staining? Stain from using Morton System Saver salt pellets? Algae? Your pool service man should be able to tell you. Then take the appropriate action to remove - ask your local pool shop or pool service person.
Use a natural ascorbic acid based pool product to clean stains on walls in the pool. Once applied, this product almost immediately removes most stains. Most pool stains come from metals in the water. Test your fill water to make sure it doesn't contain high concentrations of metals, if you fill your pool from sources other than city water.
Sodium Hypochlorate 5.25% AKA Bleach. Y-THINK-Y
Why in the world would you want to paint a marbelite or plaster pool?
Try algecide gel and a soft sponge. You might also try Vitamin C tablets in a sock.
My experience is that the stains will go away by themselves, through the effects of the chlorination of the water. Does not matter if the pool is a salt pool or fresh water pool. If the pool has a plaster finish, brushing the stains with a wire pool brush will speed up the process.
Give the contractor who did the job to come back to correct his unprofessional work.
yu lift it up
I seriously doubt that the pool sweep is the problem here with your stains. You will have to describe the stains in order to get to the root of the problem. Are the stains: Rust color or brown? Black or gray? Green? Blue? Are the stains consistent or uniform? Are they all over the pool? Do they cover the whole pool or are they in small patches? Answer these questions and I may be able to tell you the cause. k
What is the best way to remove algae stains from the pool liner?Empty the pool, use a soft brush, mild detergent and water to remove algae stains from the pool liner. Thoroughly rinse and dry before refilling or storage. http://www.air-inflatablepools.com
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.