Help with Tree frog Habitat

[dolphinm00n]

Hi, I am new to this site and I am not sure how to get help from members who may have the answers. I have a white lipped tree frog about a year old. He is in a 20 gal aquarium with artificial plants and a 50w heat bulb and an UVB bulb. I live in the south-MS and until winter I have been able to keep the humidity and heat to where it should be I think. Not sure exactly on those temps because many sources are not congruent. Now that it's winter I can't seem to keep the numbers up. I got another gauge and it still not right. I mist tank 3 or times a day. Could I have too many plants or do I need to up my voltage on the basking lamp maybe to 75w? Can you or anyone that you might suggest to me to help?
Thank You

Deborah

[Heatheranne]

Do you have a photo of your set-up?