humidity air circulation and mold

[lucky strike]

Hello,
I'm new here and we are in the very early planning stages of building a rainforest paludarium type of system and one of our deciding factors on our system and livestock choice relates to how the paludarium would affect the room enviroment that its located in. Designing a system for a worst case senario of 100% humidity how much circulation does one need to not have mold issues inside the paludarium? Is it common to even ventalate them? Is mold a real problem or grow rampid in these things? I would be custom designing the cage for our live stock and depending upon our choices a worst case size would be 30 inches wide and 18 in deep and 4 ft vertical. The doors would be wood and glass and the top would be either screened or a combo or screen and glass. This would be the source of air exchange and may be assisted by small fans if needed. My intention would be to have live moss and plants throughout as well. I don't want to create mold and humidity problemns in our house because of ventalation requirements and will change the design as needed to prevent this. We come from the reefing hobby and id imagine that a paludarium effects would be less drastic but I don't want to have something that's going to cause problems for us. Thanks for input!

[jokefox]

take a vicks cool mist impeller humidifier
and hook that up with a 1 1/2'' or 2'' hose, it provides humid air constantly, then have a reptile ultrasonic thing inside the water tank on a timer for a RH boost
, try that out , should get about a study 80-90 % and 100% with ultrasonic