Thank you, Pluke. I'm just a little worry about its stomach which hadn't been used for so long time, so I must be careful not to make it overload.
And its drainage is less...

The vivarium was set up half year before I got bumble-bee. I'm a vivarium lover, and have collected some charming orchids inside.
When they flowered, the tank was colourful. Next time I can show some more pictures about that