I'm planning on getting an Apex controller. The regular Apex is very expensive though, and I'd prefer to get the Apex Jr. I had made a thread about whether I can use the Apex DOS without having an Apex controller, but I assume you can't do that. I asked that question because I was concerned that the Apex controller could potentially mess up my system if it fails. For example, I read about multiple people having issues where stuff plugged in to the Apex energy bar thing would all stay on when it shouldn't, like heaters or auto top off, which would cause a tank crash if not caught in time. So my question is this: how can I avoid a tank crash if my Apex Jr fails in some way? I know it's probably not a common thing to happen, but still, Google searches say it has happened to some people. I would not be plugging in the heater to the Apex unit, because the heater can turn off on its own once the correct temperature is reached, but I would be plugging in the return pump and powerhead(s), and the Apex DOS. I'm assuming the Apex can supply power via the energy bar if the power goes out. I suppose heater/light should be plugged in, too, but unless I know I will not have problems, I will be hesitant to use the heater and light on the Apex in case the Apex fails in some way and the light, but mostly the heater, stays on or off and causes problems. That's my only worry about getting a controller like the Apex. Should I be worrying? And how can I avoid problems in my future reef if the Apex Jr malfunctions?