Temperature question?

Simple question? Running a 4x8 tent what is ideal high and low temperature?

Low 70s to the mid-80s is the ideal temp range.

So what I realized is if I’m using an ink it’s it 608 t it’s going to keep the tent at a constant temperature. There will be no temperature drop in the night time. Is there a controller that will do that for me that you know of? I’m in a basement where with lights on my temperature is 76. Lights off it’s wanting to drop to high sixties. So I’m needing to add a little heat but I don’t want it to be a constant temperature either, right?