I've been lurking a couple of years, using the TFPC method, and it's been great. We bought this house with a pool in 2011, and I've been learning a lot. Since opening this year, I've noticed that the returns are spitting out pieces of what I've recently vacuumed, like leaf fragments. Pressure and filtering are good, otherwise. I think my sand is channeled, and that I need to clean the sand. I've read the thread on cleaning sand filters a few times, and it seems pretty straightforward, but I have a few questions:
1. Does that sound like the right diagnosis and approach? Anything else I should look at first?
2. I assume that to get to the sand it's just a matter of disconnecting the multiport from the three pipes, and then undoing the ring of bolts attaching the bottom of the multiport to the body of the filter. Is that right? I don't need to take apart the multiport itself, right?
2. Should I plan on replacing any gaskets between the multiport and the filter body, or any other gaskets, while I have it open? I'm going to address that slight leak at the return pipe while I have it apart.
3. What else should I be thinking about or worrying about?
ps: pay no attention to the puck feeder in the pictures. It's been empty for years...