My wife noticed the bottom of the pool had more dirt/sand in it. She cleaned it Wednesday or Thursday. We left town for a night and kept the filter off and came back today to find the dirt. Not all over the place but still very noticeable. So here's my question: Could this be sand coming from the filter? We changed the sand in the filter this year. All of the fingers in the bottom of the filter looked good. We did end up blowing some sand into the pool on start up but rerouted the input hose until it turned clear. Just wondering if we could have something wrong with the filter or need a heavier grain of sand? Used the recommended type of sand listed on the filter. (#20 Silica)