I have a friend in Brazil working on the idea of a pelrier cooled terrarium. I have some electronic parts I need to send to him now that I think of it. This might work. I have speculated that an old water cooler with a pump to circulate the cooled water to the roots might work as well, but I haven't experimented. My friend also has difficulties with other Brazillian taxa. Maybe he will find a solution. I can put you in touch with him if you are interested. PM me for an "introduction".