I think backups in case of power failure is one of the most overlooked aspect of this hobby. I have a 25 gallon nano and run an mp10 so I use the ecotech backup. This has worked very well for me during a couple hours long power interruptions. I can't really justify a generator for this size of tank but if I had a bigger tank I think I would have a whole house generator that somebody could easily turn on if there was a power interruption when I was gone, my biggest fear. I wish there was some sort of manufactured backup for heaters that would maintain a lower temp, maybe like 70 deg, in case of a power interruption.