Wow, sorry to hear about this.
I will mention one thing, a controller like the Neptune JR is well worth it. On my tanks, If the temp gets to 84 it shuts the MH lights off and starts another circulation fan. You could configure it so that it would turn on your chiller if it reached certain temp and then turn off once it reached a lower temp. $250 for everything you need. Very simple system to use, controlls all my lights, pumps, fans, etc...Whats nice about this type of system is that you set perameters for everything, like "if temp reaches 84, turn off lights and turn on spare fan" or "If temp drops below 78, turn off fans and chiller and turn on heaters".....