It is not possible to have a pressure level on your swimming pool! However the pressure on the filter gage could run anywhere from 5# to 35#
Pressure inside Earth increases much like pressure in the swimming pool increases.
You can not measure the pressure in a swimming pool. If you mean the pressure on the filter tank gage then you may have to backwash the filter. Talk to your local pool store for instructions as how to maintain a swimming pool and the equipment. Get some education on swimming pool maint. before you get into some real trouble. A pool is not too forgiving for someone without a basic knowledge of pools.
a swimming pool it should be neutral pH ie green
A person can go to a plane after swimming in a 2M deep pool because the pressure is not too much.
Friction
2 meters below the surface
No specified pressure at the "return" fittings at pool side. You do not measure pressure at these points.
The only way to lower your cya level in your swimming pool is to partially drain your pool and fill with fresh water that will lower it or if you want to lower it to almost nothing completely drain your pool and start over but keep in mind chlorine tablets will raise your CYA level More information in the related link below.
sand
About 17psi at 1.8m
Yes. She does like swimming, but only in the pool.
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