Well, you don't need a day and night lamp. You could just use a ceramic heat emitter (che) since bps prefer no light. The top of mine is covered with heavy duty aluminum foil, except for a ring cut out for the che to sit on it.

Substrate can make a difference with humidity.

The other questions....what are you going to measure heat and humidity with?

Sent from my SM-G920P using Tapatalk