Can you remove the bottom drain shut off valve and still blow out a plug the bottom drain on your pool.
because it is broken
camel
Perhaps you have used the wrong sand or it is still blowing old sand out of the pipes.
Filter, winter, closed, backwash, rinse, waste
Don' know how to store used filter sand, but a good question none the less :)
One reason is that you have a Sand Filter and one of the tines is broken
Other than the wind blowing, nothing. If you cannot get rid of sand in your pool, it is most likely a filter issue. If you have a D.E. filter, and all the grids look good, check to make sure the manifold has a good seat. There is also a small "filter" on the top that may have a hole in it, if its crushed that is most likely your culprit. If you have a sand filter then you most likely have a broken lateral (a small line in the bottom of the filter that screens out sand) The only way to check these are to remove the sand and visually inspect all the laterals. Tritonunderwater.com
how do you clean jacuzzi sand filter, and replace sand
distinguish between slow and rapid sand filter
Nothing if its a sand filter However if sand is coming into the pool from the filter then you may have to replace one ore more laterals in the sand filter as they have worn and are letting sand through to the pool,
If you are getting sand blowing into the pool through the returns You have a problem with the radials in the sand filter. this will require removing the multiport system from the top of the unit . removing the sand, and replacing the worn radials. Get advice from your pool shop.
Im not an expert by any means but what I know is that with a sand filter system if your pump is not the corect HP for the filter it will push dibris and sand right back into the pool answer:: That may be true in remote cases where the system was not installed correctly or had well balanced/matched equipment. The correct answer would most likely be that you have a broken lateral(s) which allow sand to pass back to the pool. It is best to find the correct type lateral for your specific filter. Some manufacturers have made modifications to same model filters as production and technology progresses. Replacing the lateral required turning the equipment off and making sure it will not come back on while it is being worked on. Removing the filter top or valve assy. Removing all sand, finding the damaged lateral(s), replacing lateral, replacing the sand with new sand in the correct manner, replacing the valve or filter top and starting the equipment and backwashing the filter to reduce the dust blow back K