yes depending on the temperature it might freeze completely
This depends on many factors.
density is mass over volume. if the mass increases then the volume increases proportionately.
Water typically freezes at 0° C (32° F) and boils at 100° C (212° F). Due to the chlorine in it the exact temperatures may be slightly different, but should be within a degree or two.
You can, if the water presently in the pool is 'hard' - but be very careful to keep an eye on the Calcium Hardness of the pool water. If you filled a pool with water from the softener, the water would be hungry for calcium and drag it out of the pool walls, making them feel and look like sandpaper. Calcium hardness should be kept within 200-275ppm. best to use regular water for topup and keep the pool water properly balanced (see your local pool store).
Yes,ower body can effect the water in a pool
nearly none but most of the water might freeze.
No, water should not be kept in your pool all winter. When it gets cold enough, the water will freeze. When water freezes, it expands. So when the water in your pool freezes and expands your pool will be ruined.
if You are still expecting the water to freeze yes because the water in the filtration system may freeze and cause damage. Otherwise no.
You can rehang the liner on your above-ground pool if it fell over in the winter but you will need to remove the pool corner caps, the rail, and all of the water. You can then re-stretch the pool liner and refill the pool.
I see no reason why you would insulate them. When you close your pool for winter you will purge (empty) your pump and pipes. The water in the pool would freeze long before the water will in the pipes under ground.
no, the pool must be empty
Yes, this water is evaporated.
I would NOT recommend leaving the pool drained all winter. If water froze in your hydrostatic relief pipes it could be the same as leaving them plugged. Further, moisture in the ground under the pool shell could freeze, expand, and "heave" the pool.
It can crack the pool and any pipes that has water in them that freeze. a way of protecting the pool is to float drums in a line along the middle of the pool there by leaving an unfrozen track along the middle into which the ice can expand. You should definitely empty the filter and exposed water pipes.
To winterize your inground swimming pool, first backwash the filter, and then disconnect the pump. Purchase winterizing chemicals for the pool water, and be sure to use a pool cover.
It's best if the water is cleaned before you close up the pool.
0 degrees Celsius, 32 degrees Fahrenheit.