I love the look of the exo-terra and zoo med terrariums but will the sizes work for a pair of d. azureus? I see 12 x 12 x 12 (too small?), 12 x 12 x 18 high (azureus are terrestrial so the high is fairly useless, no?) and 18 x 18 x 24 which seems like overkill. Any ideas anyone? Thanks for your help!