Keeping Humidity up (Tinfoil Help)

[Rikoku]

CHEs are essentially a RHP in bulb form. They do not dry out the air. I use CHEs in my tortoise enclosure and I maintain 80%+ humidity.

It is always interesting when I hear people advise newbies to use a gradient. Is it easier to maintain and measure one temperature or two?

Please by all means, everyone do what you think is best. If you find my advice to be rubbish then dont take it.

First time I run into someone mentioning this, In this case would you want the monitor the ambient temperature or would you still be concerned with substrate surface temp?