Sand filter blowing stuff back into pool

jeremydu

Well-known member
Jun 24, 2008
77
MOBILE, AL
So I have a sand dollar sd60 sand filter that has started giving me a problem. I will use the vac to clean the pool and the next morning silt / the stuff I just vacuumed out is back in it. Not all of it but a lot of it. The filter is 11 years old and the sand was replaced 7 years ago when we moved but from my understanding it should never need to be replaced. This isn’t filter sand showing up in pool so I assume my laterals are still good. What could be causing this? My spider gasket has never been changed, could that cause it? I am really at a loss. I even added DE to the filter to help out and it may have helped a little but not much. I backwash often and rinse afterwards. Any help would be greatly appreciated.
 

jeremydu

Well-known member
Jun 24, 2008
77
MOBILE, AL
Good deal! Gonna go do it now. Thanks for your reply.
Just for my knowledge, what kind of problems would indicate that the spider gasket needs to be changed?