mine is big enough, and the plastic lining in mine is INSIDE the screen (next time I will find a way to put it outside so the dragons have more surface to climb on) I had a tree (a Dwarf azalia) that died from either to much or not enough water, but the leaves are falling off slowly, and the dragons each have their favorite places to pearch on it. Sometimes I cannot find on for a while. I still have the paint tray in with the filter to bubble/splash the water a bit, and I have the container of substraite in there if they want to dig, and the food dish.
FroggieB's idea about the superworms helping stabalize the environemnt may be a good one, and help break down the leaves in there. I will give it a try
I did take a nail and punch holes in the bottom of the tub of substraite to keep water from poling at the bottom and getting truely NASTY
Hope this helps
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Elizabeth (ecb)
Make this world a better and more beautiful place that You have been in it
*Edward W Bok*