New rack

I just received my new rack and we are currently thinking of a Helix thermostat. With a rack is there a way to adjust the temps from day time temp to night time temp without manually doing it everyday or is it not a big deal if you keep the temps between 80-85 degrees all the time?

There are several tstats that will do that for you, but it is really not necessary unless you're doing it for a specific reason.

Also, the warm side of your tubs should be ~88-92 which is what your tstat will be controlling. Try to get the cool side to 78-80ish if you can.