Water and negative temperatures = ice formation. This process is familiar to everyone. Water increases in volume during freezing. Probably everyone has at least once forgotten about a bottle in the freezer that later burst. So many people ask themselves, should they pour the water out for the winter? Paradoxically, emptying the tank completely is a very bad move and we should not do it under any circumstances. As we already know, when water freezes, it increases in volume. Although we cannot see it with the naked eye, the water in the soil is also subject to this process. This one puts pressure on the walls of the pool and can cause painful damage to our wallet.
The obvious conclusion, then, is that water should not be poured away, but neither should it simply be left behind. So what should you do? Lower its level according to a universal rule - the water line should be less than 20 cm from the skimmer, jets or any other elements of the basin. It is important that the water line does not touch the pool lamps. Depending on the position of the jets, the lamps should be fully submerged or uncovered. In the case of prefabricated pools, you should look at the instructions. There, the manufacturer tells you how to winterise the pool and to what level to drain the water.
