I won't have a need for an egg nest, being as I plan on getting two female geckos, but I will have tons of Anubias barteri "nana', attached to the "roots" and Riccia fluitans floating in the water portion, and in the land portion I will have a single Saintpaulia ionantha and several Anubias hastifolia and Anubias congensis attached to the lower potion of the rock wall. THe arboreal section will be covered in Vesicularia dubyana. I would also like to get a few african ferns, (of which I can't think of the scientific names off the top of my head). I plan on having this tank heavily planted.Looks very nice, dont see a reason why it shouldnt work. You should include if possible a few plants and some dirt to give the geckos places to lay their eggs.