I put a layer of river rocks, and/ or those little clay balls, and a layer of soil in my exo terra and planted some live plants, and mixed the soil around every couple of days so everything broke itself down(poop), etc.. I really never clean my tanks out with bleach all the time, I clean it with a little bit of eco friendly soap and hot water.
Cresties don't have to eat bugs, but they can, they grow a lot faster if they eat bugs. But they can live perfectly healthy when only fed the repashy powder diet. Or they canbe fed both the repashy diet, and bugs. http://www.pangeareptile.com/store/c...ecko-diet.html
They are expected to live 10-20 years.