Hello everyone, I live half way between Boston and Cape Cod. I typically open the pool up during the end of May and close it down by mid-September. I wish I had discovered this website years ago, I am still learning how to maintain the pool even though I've had a pool for almost 20 years. I have an inground vinyl lined pool with currently use a DE Hayward filter and pump. I am planning to buy a new filter soon. Thanks, Dan.