Newish pool owner on a house purchased in 2017, still getting the hang of things. The pool was installed in 2001. I believe the sand filter is the original from 2001, and I'm guessing it's still on the original sand with never a deep cleaning. Seems to filter OK but took several days to clear up the pool when I opened this year. I would like to do a deep cleaning of my sand filter, per the sticky here. I have no plumbing knowledge/experience. Can I remove the filter without having to cut pipes? Attached are pics. I have no unions close to the filter, but my return line has a union a little lower, close to a jandy valve. The pipe from the pump to the filter has something just above the pump that I don't know what it is, doesn't really look like a union but I'm hoping it is, or something else that could easily unscrew? Would I be able to get the filter out, for a deep cleaning, without having to cut pipes? Appreciate any help!