Dirt in Return lines when Vacuuming

[bgray]

I had a similar issue with my Pentair cartridge filter. My vacuuming seemed to "overload" the filter. Once I stopped, cleaned my filter (no backwashing a cartridge), things cleared up. Good luck

[troykristoffer]

I had this problem too. LOL I never figured it out, I did backwash with no results, but finally broke down and bought a cleaner (dolphin) that doesnt rely on my circulation system.