I'm new at keeping toads (raised toadlets since July 2011) but this is what I have going on: 2 Fowler's toads in a 40 gal breeder tank, the substrate is a mixture 50/50 of organic potting soil & eco earth and it's great for them to bury themselves in, plus it will hold moisture. I have live moss over the entire floor but removed small patches where the hides are. Live plants they will just dig up, so I have several hides and also things for them to climb on. I've mail ordered bugs and it works out great. Their diet consists of pillbugs, earthworms, waxworms, crickets, roaches & butterworms. Also the occational moth I can catch. So far they are doing great. You can check out their habitat in my albums. I don't know if any of this helps but so far it's working great for me.