should be ok alan,just push it into a corner and make some little ladders out of wiremesh so they can climb easily.
propagating pumice sand works best for me,dampen it down a bit and the trick is to not leave it in there too long,its quite warm in there and it dries out fast.better to replace with a fresh one than leave a dry one in longer or to try and add water,just does not get deep enough into the medium.I take mine out once a week and thats probably pushing it abit long,probably costs me a few viable eggs,as you get more experienced you cut a few corners?When Istarted I would take the egg cups out everytime I saw they had layed and I got heaps more babies,also had heaps of containers to hatch and fill etc etc??