Quote Originally Posted by coryinsocal
i've been going back and forth between the pentair fns plus 36 sq ft and the starite mod cart in 300 sq ft....
I've had the pentair FNS+ 36 for several years now. No mechanical issues at all.

So far this year, I've not had to backwash or clean once. It's amazing what happens when you stay ahead of your pool I am at 13 now, but I'm pretty sure it's due to cotton wood trees with no skimmer sock.

My filter pressure runs at 10 psi at start up. It's recommended to backwash when it goes up 10, so for mine at 20 psi. What I do after I've backwashed is add de slowly back to it until the pressure again hit's 10 psi. This way I can avoid a complete teardown unless absolutely necessary.