No its not like tree frogs. I recommend keeping the lid completely glass with new folks as they seem to have trouble maintaing a high level of humidity that the darts need. As you becore more experienced I would suggest leaving an inch section of screen at the back or the front. That will give a little ventilation for the plants such as Broms. But believe it or not just the opening and closing of the lid allows enough ventilation into the tank for the frogs. Its really more for plant health. Only you know your own skill level. Set up your tank and measure your humidity levels over several days. Then add a section of screen and do some more measurments. If you're able to maintain it with the screen then by all means have "some" screen. Just go to some websites like Joshs Frogs or Black Jungle and then you can find out what kind of leaves they are using for the leaf litter. Or I'm sure someone else will know the names I'm just terrible with those kind of things. I'm sorry I just buy "leaf littler". Springtails and Isopods you can also pick up from internet sites.