I am frustrated. Last year the solar heater was great. This year not so much. I’m an extreme novice at this and reading the stupid directions is not working for me. Please talk to me like a second grader and tell me what I should be setting my temperature differentials at if I want my pool to be around 83-85 degrees. I just want the Dang thing to be on and heating it as much as possible! Also the rpms of the pump. Right now we are running it at about 2700. Thank you!!