I think you've made a great start. They've got ventilation and moving air. If you're happy with having the fan outside the case, I'd let it alone at this point and observe for awhile.

John

I agree with John here, as lon as there is movement of the leaves and flowers you probably have enough air flow. I wouldn't add more unless you are needing to dry the roots quikly ( as with Tolumnias etc.) Just keep an eye on everything and adjust if you see a need.

Ditto to the above opinions.
Q - How would ya plug in the air freshener inside the case?
Mike

Thanks. I made another discovery today. If I raise the water level in the bottom of the case, the humidity goes up even more - 74% right now.

Mike - That would be a problem. I guess an extension cord would be the only way. I was thinking of somehow mounting the device on the top of the case blowing downward. Then I wouldn't have to worry about the cord in the case. For now, I'm going to stick with this setup.

Hey Kevin,
I don't know how big your case is but if you have room you can throw in a small submersible aquarium heater into the water and raise the water temp which will also raise your humidity.

Charley's Greenhouse (google the web site) sells some small clip-on fans that you can point downward if you want.

For now I think I'm satisfied with this setup and the humidity levels. I was thinking if I did want to increase the humidity, it might be interesting to try a regular, old aquarium pump with the air hose submersed in the water - maybe an air stone attached. I bet the bubbling water would increase evaporation which would increase humidity.

Hi Kevin. Sounds good. Can't think why you'd want humidity higher than 70%. Much higher than that and you would probably have to increase air movement to offset fungus attack. What you have now sounds like a nice balance.

John :>)