This is what your filter gauge will read when it is first start with a new and clean filter cartridge / D.E. or sand.
when the pressure is high on filter mode it usually means that a backwash is required.
Usually the pressure gauge on your pool equipment indicates how much pressure there is before the filter. as the pressure goes up it indicates that the filter is getting blocked and needs a backwash or cleaning. while the pressure is low the filter does not need cleaning.
Pressure can vary greatly from one system to another. It's best to record pressure immediately after cleaning the filters. This will be your base pressure. When the pressure rises 10-15 psi above the base rate, it is time to clean the filters.
The cleaning schedules varies from filter to filter, but a general guideline on any swimming pool filter is to take a reading when the filter is clean, then clean the pool filter when the pressure rises about 10 psi.
because the leak releases pressure?
Clean the Filter!
I suppose. Was that the pressure when the filter was new of very clean? No 2 filters will be exactly the same.
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.
As the filter gets clogged it restricts the flow of water and the pressure in the return line drops. The pressure gauge on the filter itself indicates the entry pressure and that will go higher as the filter becomes clogged. Don't ever allow the pressure to reach 40 PSI. Back-washing the filter should restore the pressures. Pool Masters
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#
The pressure increasing indicates that something is blocking the filter.
Cleaning the filter will lower the back presure. or else a hole in a cartridge filter will also do it.