Ooooh! That kind of controller! I gotcha. I also forgot that you are an electrician. That controller will be great. I think you can do a chiller on it, too, if you're ever looking to.
Just a friendly FYI, my RK2 has a cooling option for fan control, too. It's just an option. When the tank gets up to 79, they kick on. When the tank gets down to 78, they turn off. Wait... that may be on my RK1... I'm not sure now, but it's a cool option nonetheless.

You know you're going to have to breakdown and get a RKE one day, Mike.

They are super sweet!