When it's cold outside, pool owners should use a pool cover to prevent debris from remaining in the pool.
This coating also prevents leaves and other debris from falling into the water during the months when you can't use the pool. With that in mind, you need to find a cover that fits your pool area and will endure the cooler weather during the colder months.
You can look for various indoor pool covers at https://www.coversinplay.ca/.
There are different types of tablecloths for underground or onshore pools. You know this type of pool because it's so clear.
The swimming pool is either underground or constructed while the upper floor is being built. Which is a permanently installed pool, while that which must not perish at any time.
It's worth noting that if you have the underground pool above, you have two options. You can leave the pool outside after it gets cold and install a cover or lower it depending on the type of pool.
Underground pools are larger than ground and require years of maintenance. It's much easier to cover it up than to forget about it during winter.
If you use a pool cover, you may not need to clean the bottom of the pool before using it again. This is especially true if you store pool water during the winter months, which can be quite dirty, especially if found outdoors.