My concrete around the pool was stained from tree tannins. No cleaners helped at all. I disolved small amounts of shock granules and scattered it on the concrete. After a few minutes I hosed it off and the concrete looks like new. No pool or chemical supply location had any solution. Try the shock - it worked great for me.
A light acid wash should remove the chalk.
Just increase the acidity of the water for a couple of weeks. a lot of pool stains are the result of tannin from plants and leaves and acid neutralise's it.
Cement!
Muratic Acid is the best to clean concrete. You can buy it at Lowes or Home Depot. It has to be diluted with water first.
A person can fill an in-ground pool with cement in order to close it forever. People tend to make this decision when they no longer wish to care for the pool.
Put water proof tape around it and put the inlets around the pool.
Usa a shop vac.
Justin Bieber has a inground pool
In california a 25 X 45 inground pool will cost from 25k to 35k. The actual price will be determined by the contractor you hired so shop around.
Personally I feel that a cement pool is your best option they are more durable and keep their looks, Fiberglas tends to loose its luster and and become dull looking after a few years.
There are several variables that affect the overall cost of building and maintaining an inground pool, including the size of the pool and the material will comprise it. In the Chicagoland area a small, basic inground pool will cost between $20,000 and $50,000. Some of the larger, deeper and more high-end inground pools can cost as much as $100,000. Factors into the Cost of the Pool: Size, Region, Materials, Add-on. Ways to Reduce Your Inground Pool Cost: Buy Off-Season, Shop Around, Do It Yourself.
Bromine is a healthy alternative for those with allergic reactions to chlorine to clean your in-ground pool. Ozone generators with ultraviolent light is another healthy alternative to cleaning an in-ground pool.