About rack systems

I was thinking of building a rack and I was just wondering how well the humidity stays in the tubs...is it easy to maintain? does it get too high or too low depending on the amount of holes?


Thanks.

Stays higher than it does in tanks thats for sure. I have to add extra holes to my corn snake tubs to make sure there isnt too much humidity. The ball python tubs I seem to get the right amount, though while in shed i can cover up some of the holes to raise humidity.