every time i open my de and clean , I close it up charge it . Then run it the next morning the filter will have drained back , so now when all the water rushes back in . Im thinking it is washing the de off the grids?. Im not sure why i cant get a good seal .tank gasket or pump basket gasket . I feel like I have to open again and clean again . It usually has to sit overnight to siphon back. Is repriming the filter washing the de off the grids?