You clean it.
To keep your swimming pool clean you will need a filters and a water pump. A vacuum would as be a good idea.
Usually any where inside the pool
no, the pool must be empty
With a net.
Yes, plaster will dry out and crack.
Check the pools filtration system - Ensure that your filtration system is appropriate for the size of your pool. If you do not know the correct size for your specific pool, consult a pool expert. Replace the system if necessary. If the current system is adequate, clean out the filter (clean the cartridges or backwash) and empty the pump basket and skimmer baskets to re-establish proper flow to the pool.
You can purchase a swimming pool net at Walmart, Target, Home Depot, Menards and there are many other stores that you can purchase a home net for your swimming pool.
They may survive in an empty pool, but are not able to live under water.
they got swimming pool
Yes because if the pool is Not clean then bacteria is in the pool which causes his infection
Swimming pool covers are able to keep your pool insulated as well as clean. Leaves, grass, and other debris are less likely to enter the pool.