OK, Not that many people would read this far down with this confusion but just to clarify I got two people with misconceptions on these ATO systems.
YOU DO NOT NEED A TANK CONTROLLER OF ANY KIND, these systems are self sustaining, and need no other computer or controller.
I had two people who thought, "You have to have a tank controller to have an ATO, right?"
Just to clear up, nothing else is needed to make these units run except the pump (I recommend Aqualifter)
Monday is pretty much your last day to order and still get in on this great system. IF YOU DO order on Monday YOU MUST get 2nd DAY shipping or your parts will not arrive in time for the build..