I know and have setup virtual temp probes for my setup but Im curious if its possible to connect TWO physical temp probes to the Profilux. Reason being is that my Profilux is currently connected to my 30 gallon tank and I'm in the process of setting up a 200. If I could get two temp probes then the Profilux could maintain temps in both tanks (yes separate heaters) until I totally switch over to the big tank.

Regarding GHL Fans. From what I can tell one needs the control box which connects to the 1-10v outlet on the Profilux. Then this control box connects to the fan unit... Is it possible to connect multiple fan units per control unit ?

Thanks