Rick look for humidistats for Greenhouses. I knwo there is some things you can buy to kick on a humidifyer in a GH when humidity is low. If your willing to spend the money I am sure you can use it for your BP. Is your humidity low? High? Normal fluxuation should be ok because humidity is not constant in the wild, but I;m no expert by no means. Hell I have been keeping my BP all rong for about 12 years. Doing well now, and I think I have the humidity under control just by vent holes and such. Goodluck and I hope I said something to help ya.