I inherited a Pentair Clean & Clear Plus cartridge filter from the previous owners along with the pool. Recently, when I opened the filter to clean it, I noticed that the o-ring between the top and bottom shell was a bit streched out. Is that how it is supposed to be or should it have a snug fit around the filter (where it sits)?
While looking around on the web, I vaguely remember reading somewhere that I should not lubricate that particular o-ring. I am not certain but I think the website was talking about the same o-ring. Am I not supposed to lubricate the o-ring before assembling the filter back? If not, why?
Lastly, I am noticing that the filter is catching things much bigger than what it is supposed to (leaves, small branches, etc.) My guess is that those things get by when I am removing the strainer basket to clean it. Is there anything I can/should to prevent these things (things that are supposed to be caught by the pool strainer basket) from showing up in my cartridge filters?
Thanks in advance.