Pump the water out or put a cover over the pool.
To keep your swimming pool clean you will need a filters and a water pump. A vacuum would as be a good idea.
Proper water chemistry instead of neglect. Long filter periods and a clean filter.
the hydrostatic valve is only to equalize pressure of ground water to that of the pool the only time it does anything is when the water table becomes higher in the ground water than in the swimming pool . it doesn't connect to anything. it is simply to keep the pool shell from floating out of the ground
*clean chlorine.
Chlorine is generally added to swimming pools and other water attractions in order to keep the water clean. Doses of chlorine typically come in small tablets.
to keep the water clean and kill germs
They hold water and keep it from running off. This contained water then seeps into the ground creating ground water.
Just keep swimming, just keep swimming.
Just keep swimming, just keep swimming.
HOCL or hypochlorus acid
It is to keep water out of your hair. It is mostly made out of plastic.
When digging pools to depths in excess of 36" deep; in many area's of the world; you will hit natural occurring ground water. The general answer is you use pumps to keep water levels down while working on pool shell; and you allow for ground water to flow through the bottom pool drain after shell is installed until you are able to fill the pool with water. If you don't allow for water to enter through the drain, your pool will float out of the ground like a boat, as the ground water tries to displace the ground that was removed.