Hey, glad to hear things are going well! I'm slightly confused, though and I'd love it if you could post a picture or two if your setup. The reason I'm a little confused is that you mentioned space between the false bottom and the egg crate. Egg crate is actually unnecessary if you use gravel to make a drainage layer, since you just put in 2-3inches of the drainage material(I saw you asked about this in a previous post and I replied to the thread but got carried away while typing and didn't answer the question. Sorry about that!) then use a substrate divider(like fine window screen) between it and the substrate to prevent the dirt from being washed down and siphoned out. I had intended to post this when you were mixing your soil up and getting ready to add your plants, but I guess now it is late. I should have included this earlier.
A few things need to be done with plants before you add them to you vivarium since frogs will be living in it. The plants need to be bathed/rinsed, this is done in water or in a bleach-water solution. This removed old soil that often inludes things that are undesirable like perlite, to kill and remove any pests on the plants and to remove any chemicals that may be on the plants.
http://www.neherpetoculture.com/plan...singprocedures
A lot of useful information such as the bleach-water ratio are included.
I don't know exactly what the effects of the gap are, but I feel as if it may make the soil dry faster. I don't know if it's a problem, so maybe it won't matter at all lol