Hi,
You can only edit posts for about 9-10 minutes after they are first made.
Now onto the meat and potatoes of the post.
Firstly I hate the idea of tape inside the enclosure - low tack painters tape might be alright but anything stickier than that is a nightmare waiting to happen.
Secondly - here is why you don't want to tape it down at first anyway.
Once you have checked the temp on the glass under the substrate is not hot enough to burn your snake you move the probe to the surface inside the hot hide.
You then adjust the depth (and possibly type ) of the substrate until the reading inside the hide is between 90-94f and you're golden.
I also check the temps inside the cool hide once the warm end is dialed in to double check the temps where the snake will be hiding when he isn't in the hot hide.
But if the temps ever feel warm to your touch they are possibly too warm - I just temp gunned my hand and got a reading of 94.1. Your skin might vary but generally the tank should not feel hot to the touch for you most of the time I suspect.
Once you are happy that the temps are within range you can then fix the probe of the thermometer down somewhere that would let you see any changes you might need to react to.
I suggest something like a hot glue gun - no danger to the snake once it has set and cures and easy to remove later if you need to.
And yes humidity will change in different spots and heights in your enclosure - but as long as the snake has somewhere to go where the humidity is right and he feels secure then you have no real need to worry.
Hope this helps a bit.
dr del













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