if uv just had them then theyll probably not do much for a while. try covering the tank so its enclosed and theyll feel safe. also id suggest to get some hanging plants or somethin as they dont seem to have much to hide under and the theme of the enclosure seems pretty 'open'. theyll apreciate it. u may want to move ur heat mat to the back wall. i have mine here. it may not generate enough heat at the bottom as u have substrate ontop of it. try using a lamp for light. one of those cheap desk ones. itll also sort out their day/night cycle bit better. hope this helps