Hello, I just bought an Inkbird ITC-308 to power 2 Ehiem 150w heaters for my 125g and 40 gallon sump. Currently heaters are in sump and set for ~81 degrees and keep the tank right on 80 degrees. I am curious whether I need to keep the heaters set as is or increase the temp? Plus where do I place the sensor, in the sump or the overflow? I have never used a controller in the past. Are there any experiences anyone would like to share with this controller? Equipment Aqua Medic 9.1 @ 2000 gl/hr 1x Eheim 2215 and 1x Eheim 2217 3x Mars Aqua LED's I am guessing that the sump is fine for probe placement. The sump is turning over its volume almost once every minute, right? But the temp is somehow confusing me. 1 hand I raise the temp and heaters are on a shorter period of time, I think. However, if I increase heater temp setting and the controller fails. i have the potential to cook the tank. My conundrum is the controller protects if the heaters fail. Setting heaters at desired temp protect the fish if the controller fails. Am I over thinking this?