Hello, can anybody help me. I am confused on how to set my inkbird itc306t. I want my aquarium at 78. I don't know if I am suppost to set the SV at 78 and the difference at -1 so it will turn on if it falls to 77 and then cut off at 78. Also the heater should be set to 80? I believe this way the inkbird controls the heater. Is it better to have the heater control the temp. How would I set it that way? Thanks