FYI everyone the Hydra Small Fan Kit will NOT work with the WiFi option for the Excel and Ultra 2, etc. Hydra does not have a fan that will work with these units.
I got this information from Cigar Oasis. I think my solution, for now, will be to make the Hydra Fan run continually by connecting it to a separate power source. I did ask Cigar Oasis about their fans and I'm waiting for an answer.