Hi All, we opened the sand filter last night after having flow issues...it basically works for 15 minutes then quits. We have very high pollen, it was caked on top of the sand...we scraped off that layer, added more sand and it worked better last night. I added a pool sock over the poolside skimmer, but we’re still losing flow. I can’t seem to find anything about this on google, and I am just feeling super frustrated. Do you think we got a bad pump? It’s less than a month old direct from the manufacturer.