

Need some assistance in humidity maintenance
(If context is desired please read the previous posts I made)
Tl:dr I upgraded my fathers python enclosure, and I've been trying to dial in the humdity. I wanted to do plastic wrap first but it didnt work as well as i hoped so I replaced it with aluminum foil yesterday. I day a immediate improvement in humidity through my hygrometer, but when i woke up and checked it after going to bed it had dropped back down to unsatisfactory levels. Could it be that im getting a inaccurate reading or could it be because I need to better seal up the gaps in between the mesh and foul? Or is it possible the issue stems from something like substrate depth?
(I thought i had picture with the foil in the lid but i dont so Imagine these photos havingaluminum foil on the lid with the same sectiona cut out.)