I too am planing on using my apex. Good advice on the set points. makes perfect sense...
I did see some who say an independent controller is needed, but since the thermostat in the heater and the one in the apex create a backup, I am not sure why i would want to buy a third... sure a third failsafe is nice but not a must IMO... Yes beananimal, I did read your article and it all makes sense (as most of your writings do) but buying another piece of equipment and bypassing one of the uses of a $500 apex is not in my immediate plan. perhaps after I am done with the pain of the $2500 I have into this tank and have not even added water yet...