I read the replys to the Southern closers. However this is my 1st time having a pool in the winter and I live in just south of Dallas. Since this is my 1st pool I am clueless on what to do for this area? I noticed some keep them open and some close. My questions relate more to when should you look to close a pool if you do close it? If you keep it open do you add less chlorine or keep it the same and should you lower the pump on working hours if you have a VS pump?