So far all is well but I think I may have to look at my filter/pump setup.

There is very low psi as a general rule. I added some de to my sand filter slowly. Only 1/4 cup, and it bogged the output down. Another time I added some stabilizer for the cya and it bogged it Down bad. Both times I had to backwash after a half a day to try to regain some pump filter effectiveness. I don't even know where to bgin on this one and I'm hesitant to call a pool company because who knows how honest they will be.