I usually keep mine around 90-91. Alot of people who use glass enclosures will cover three sides of it since BP's aren't too fond of alot of open space. You can use anything from paper to fabric. I use aquarium background. just cut it and tape it to the outside. Also what I did to help with the humidity on mine is cut cardboard panels that are the legnth of the screen and 6 inches wide and wrap them in aluminum foil. That way I can add or remove panels to help adjust the humidity and ambient temp. If you want to see the pics of how I did it send me a PM. Welcome to the forum...
Rob