Quote Originally Posted by wfbrad View Post
Hi guys, I have a 22000 gal in ground plaster pool. Swimquip sand filter, unsure of size, the decal is faded out from Arizona sun. Lately I have noticed that when I finish backflushing the filter, sand is coming out of the jets, about 1/2 cup under each on the 2 closest to the filter. What would make this happen? I changed the sand out last spring, but the problem did not show up until mid winter....
It also can happen if you have a broken lateral in your filter, but the only way to check that would be to take the filter apart and remove the sand to look.

Janet