I have a cartidge filter, which I believe I cannot backwash. I am getting a lot of small particles within the pipes it appears, just a lot of really small and random debris from nearby tree, that I guess makes it through my skimmer. This is the first february I have had since my pool was done, and is definitely the most falling debris I have had to deal with. Either way, I am wondering the best way to handle this. I do my usual pool maintenance, which among a few things consists of cleaning the basket by the pump, and hosing down the filter. When I hose down the filter there is just a ton of particles within it, it's as if I create a waterfall of thick debris. It's definitely more than just a dirty looking filter, but just filled with all of this stuff. I just purchased a skimmer "sock" to hopefully trap all of this smaller debris, but is there anyway I can flush all of this other debris out of the system. I was thinking I just needed to backwash it, but after reading I now see you can't backwash cartridge filters. After I just cleaned everything, and fired the pool back up, for example, all the water that filled the pump contained a bunch of this debris, almost immediatelly filling up the bottom of the basket in the pump. Hopefully this makes some sense. Any help would be appreciated. Thanks.