If yea wanna have some real fun, go lay on yer belly in the yard and stick yer hands down into the well box that is full of spiders and creepy crawlies. Then use every ounce of strength and loosen the filter pod to replace the filter.
This is the old one that started not filtering much at all. There is a union coupling at the bottom that is for the back wash water dump. After every yard watering the filter back washes to flush off the sand. At some point in the last year a hole developed. It had been on there for nearly 10 years and only cost $28 to replace.
To remove the housing I have to loosen the coupling at the bottom and then rotate the filter housing. The challenge is the union coupling had two big flat surfaces just nice and tight. I have to bend the 2 inch PVC pipe just a little to get the pod to rotate, and it has been there for a decade.
After I get it apart of course getting it back together nice and tight is almost as hard. Hopefully it will be another 10 years before I have to do it again.