I'm getting a male panther, so I know it has to be around 75%-90% humidity. I plan on having 3 live plants in there, so hopefully they will help retain some humidity. I have a screen enclosure (2x2x4) so I'll definitely need the plants and frequent misting to maintain the humidity. The back of the enclosure will have exoterra foam (that one that looks like wood/logs) so that's one side "closed off" so to speak. The other 3 sides of the screen will be open to air flow. If I'm unable to maintain humidity with this setup, I'll consider blocking off the lower half of the left & right sides with a light diffuser panels.