I have recently set up my tank with an Aquatronica controller. Like you I do not have a huge range of paramaters that I want to control or monitor, but I like the fact that it is fully expandable in the future. I am monitoring PH on the tank and the CA reactor effluent, controlling the CA reactor ph, monitoring and controlling temperature, monitoring the sump water level and operating all timing functions with it.
I must say, that since getting this thing, my tank seems way easier to keep consistent since there is one single unit that runs everthing instead of a bunch of different equipment that were overlapping controls or operating under manual control. And, its all done automatically. Best of all, I only had to change one time setting this weekend instead of five
