I have an in floor cleaning system with 5 rotating jets. After a few weeks of brushing floor debris towards the main drain, I noticed the debris doesn't seem to dissipate. Having decided to check the main drain, I noticed little pressure/suction from the drain itself. I did notice there is debris caught in the drain itself (too large to get through the trap - not clogged though). I also turned off the valve from the skimmer so that the main drain was the only feed back to the filte. I noticed little change. Should I be able to sense some pressure/suction from the main drain or is this normal? I should mention that when I shut the valve for the skimmer, the flow from the main drain does seem fine.
Sorry if this is obvious. This is our first season with the new pool.
thanks in advance-