monitor/controller fro SPS tank

[trueblackpercula]

I am interested in getting a monitor/controller for my 120 cube SPS tank. I have never looked into them until today and see that there are so many different ones. What I would like is one that monitors my Calcium ALK/DKH temp PH and be able to control my heater and chiller and my power head. Does this kind of controller even exist? Can anyone share what they are using and the pros and cons.
I have $400 to 450 TOPS IN MY BUDGET.
thanks
Michael Anthony

 

[volcom69]

If you can find one that can tell you what your dkh is let me know that would be great, im always testing this, only problem with that is you better make sure its accurate or you could be in trouble. I dont think all of those exist in one controller but then i again i could be wrong. I use the RK2 and i like it alot for my temp and ph.