I am new here but just read through a post about this from earlier this year. Is the solution for this getting a stronger pump? My pool is 15 years old and this is a new problem for me over the past 6 months or so. I always thought it was DE but it stops after turning the cell off. Based on the old thread I need to make sure there are no leaks in my system first and the maybe get a stronger pump. Do they make different size 1 speed pumps? An mine is also worse with my solar heater on. Thanks