how do you do this without cutting off the circulation of the air??? if it’s completely closed how does the air circulate?Glass tanks are fine, but still have the same problem as your enclosure. The open top. Trying to heat and humidify an open topped glass tank is like trying to heat your home in winter with no roof and no ceiling. You need a closed chamber. You have to close off the air inside from the air outside, just like our homes. You also need the heating and lighting inside the enclosure instead of sitting on top creating a chimney effect.
The other problem with glass tanks is that they are too small for anything but a tiny baby. Even a 100 gallon tank will be too small for your baby in a few months if it is growing normally. They can work well for starting babies if you can close in the top.
More here:
The Best Way To Raise A Sulcata, Leopard, Or Star Tortoise
I chose the title of this care sheet very carefully. Are there other ways to raise babies? Yes. Yes there are, but those ways are not as good. What follows is the BEST way, according to 30 years of research and experimentation with hundreds of babies of many species. Babies hatch during the...tortoiseforum.org
Opening up to do daily husbandries is more than enough air exchange and no enclosure is air tight.how do you do this without cutting off the circulation of the air??? if it’s completely closed how does the air circulate?