If its a cartridge filter. Cut of the water from the skimmer as well as possible then take the upper cover of the cartridge filter take out the element and hose it down. Put it back together. start the pump often there is a valve on the top of these to let excess air out, open it until water starts to run out of it.
Proper water chemistry instead of neglect. Long filter periods and a clean filter.
no it can not so stop trying
Hmm, sounds like you need to superchlorinate and/or clean the filter. Gnats or insects do not breed in pool 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.
If your water is staying clean it just indicate that there is not much dirt getting into your pool.
You can purchase a patch kit at any swimming pool retailer and use the same type of patch that is used for an above ground swimming pool liner - the kit is relatively inexpensive but it takes a while to seal but around the slash it should be clean as possible and the drier the better
Clean the filter first; 24/7 fileration; superchlorination; adjusting the pH and Total Alkalinity to specs. When pool is crystal clean - clean the filter again, readjust chemistry, maintain 12 to 15 hrs of filtration thru the swimming season.
To effectively clean and maintain your swimming pool using a DE filter, regularly backwash the filter, clean the filter grids, and monitor the pressure gauge to ensure proper filtration. Additionally, regularly test and balance the pool water chemistry to prevent algae growth and maintain clear water.
What is a normal operating pressure for a jacuzzi sand filter for an above ground pool?"
There may be a part broken inside the filter allowing waste to bypass and circulate back into the pool. You should clean the filter then inspect for cracks, rips or other damage.
To keep your swimming pool clean you will need a filters and a water pump. A vacuum would as be a good idea.
You may have orthophosphates. Their is a test kit to check for it. Possible sources are from leaves and other debris in the pool (even if you clean them out on a regular basis), animals swimming in pool, or unusually heavy bather load (lots of people swimming in pool). Pool companies sell products to remove orthophosphates. Be sure to advise associate that you have above ground pool when choosing a brand.