Sand in pool

[ThaSatelliteGuy]

OK SUPER DUMB QUESTION!!

I do not turn off the pump to change valve positions.... that's bad right?? I assume could be causing sand in pool?

[Poconos]

Not turning pump off when changing valve positions.....bad dog. Just got done typing a response to Mbar about replacing that spider gasket that causes so many problems. You may have caused one or more of the spokes to lift out of its channel and get crunched, thus leaking between ports. But, since it is new you may have lucked out because they are stuck in pretty well but loosen up with age. Try the rinse and see if that cures the problem. One clue to a bad gasket is water coming out the waste line when it shouldn't or when you kill the pump, air leaking back into the system from the waste line and draining water out of the filter and pump. But, that depends on what part of the gasket crunched.
Al

[ThaSatelliteGuy]

ya, and mine is a no-name, off-brand filter from ebay so I bet i'll have all kinds of good luck finding one when it does go out. I am doing the pump-off, and rinse as well. Seems to help not blow as much back into the pool. Before, when I went back to filter, I could actually feel sand if I put my hand over the return. Also during rinse, I see a few seconds of crap go by in the waste sightglass then it clears. I run for a few seconds more, then shut off the pump and go to filter. If it'll just do it LESS, I'll be happy. :-)