A follow up on this post – I went with Plan B. Plan B was to keep the tank as it is, add a few plants that can be easily removed, still in the pots. And a whole group of whites tree frogs. I found when I cleaned out the tank, that there was a crack down one wall. Also the sliding nature of the front doors I think was causing a problem with keeping the humidity up. Putting Whites tree frogs in the tank took care of my concerns on humidity. I have since moved the red eyed tree frogs into an 18 x 18 x 24, With two ceramic heat emitters, 6500 Kelvin bulbs, and whole new plant assortment. They are thriving, and my moss is finally staying alive. I still have all of the equipment to set up a dart frog tank, but currently no tank. I still plan on doing that sometime in the future. Ugh my pictures won't load!