I got a Finnex 820M heater controller to serve as an auxiliary controller for my heaters. On the web site (both Finnex’s and BRS’s) they state it’s not compatible with the Apex controller series but give no other rationale. Does anyone have any more insight on this? My thought is I’ll plug it in to to an Apex outlet, have the Finnex controller set at 77º and have the Apex turn off the outlet if the temps get above 80º. Used in this fashion, the Apex outlet would essentially be a regular outlet, on all the time so it shouldn’t matter to the controller.