The salt in the water is not effective unless the pump is running, which generates chlorine. So yes, extra sanitizer will need to be added. Check sanitizer once a week to ensure
It's best if the water is cleaned before you close up the pool.
You would assume a water system to have water in it, however during the winter in freezing climates it is standard operating procedure to drain the system of water... thus the answer is No you do not have to have water in your system.
water is a pretty good conductor, and electricity will flow through the water freely and shock anything within the water or close to it
do some research on them, water temp is the most critical thing for fish, if you place a fish into a cold water system from a warm water system they will go into shock,
Ferry travel continues on a limited schedule until the water freezes solid and makes travel by water impossible.
in wet grassYes, depending how close you are to the fallen power line, the amount of electric shock will vary. Electricity is much, much faster than moving water.
Not exactly one sounds more like hydraulic shock waves passing through the system
To prevent the water turning into ice
The electrical circuit is analogus to the water piping system. The word "close" means connection of a switch to get a complete circuit and to a water system you open the valve to let the water flows. Likewise if there is a connection the electrical energy flows. If "open" that means disconnected and for water piping system closing the valve to stop water flows. Therefore "close" for electrical ciruit means "open" for water piping system, and "open" for the former means "close" for the latter.
Get over it. He made a mistake. You may point it out to him nicely of course. BTW it does not hurt or he may have felt that the pool needed it. BTW there is a mode in the salt system to shock the pool thru the system. precipitation
Body goes into shock
G-Shock is a sportswatch line by Casio that are designed to be water-resistant and shock (impact) resistant.