TFP - I've posted about this before and I'm still having the same issue. I'm getting small amounts of sand and dirt in the pool ONLY when the pump is on. I figured I had a broken lateral so I replaced the sand and lateral assembly in April. That didn't fix the problem. To be sure its not algea, I have left the pump off overnight after cleaning the pool with my robot and there's nothing in the bottom. I've also kept my levels right and continually pass the OCLT.
Last week I tried something new - to rule out the lateral assembly, I put the pump in recirculate mode. Same problem - immediately dirt and sand start flowing in through the jets. It seems to happen mostly on the start and doesn't accumulate much more after the first hour of running.
How could recirculate mode be brining sand and dirt into the pool? Doesn't it completely bypass the sand and laterals?
Last week I tried something new - to rule out the lateral assembly, I put the pump in recirculate mode. Same problem - immediately dirt and sand start flowing in through the jets. It seems to happen mostly on the start and doesn't accumulate much more after the first hour of running.
How could recirculate mode be brining sand and dirt into the pool? Doesn't it completely bypass the sand and laterals?