The temperatures have been in the 80s with the light on, and cooler when their off. I have checked the PH and its right. The humidity is around 40 percent which is low shouldnâ??t be too low. For the light I do have a few warm CFLs. I donâ??t know if this matters, but the car taker is using distilled water. Thanks for all the responses I will keep you all posted.