My new Exo Terra tank

[VickiC]

After my little project of trying to convert a small aquarium into a mini-orchidarium didn't pan out as I had hoped, I began to search for other ideas for a new creation....a place to keep a few miniatures. I wanted my "mini-orchid-house" to be very simple, and very inexpensive, so I bought a 12x12x12 Exo Terra glass terrarium tank and basically copied an interesing post: http://www.orchidboard.com/node/89/

I set a 12v pc fan on one of the two sides of the screen top (which left about 1/2 of that side of the top uncovered--pictures attached ). I then cut a small piece of clear plastic and placed it across the other side of the screen top, so bottom line, approx. 1/4 of the top of the tank is uncovered.....nothing but screen. I also cut a piece of sheer curtain material and attached in to the back of the glass tank then finally filled the bottom portion of the tank with water (about 1/2-2/3"). When the sun shines directly in the window on the tank, I partially pull the window shade down in order not to place my plants in direct light. I placed a somewhat supplemental lamp with a 60 watt plant light above the tank for cloudy days. I bought a hydrometer/thermometer and have been keeping it in the tank which leads me up to my question to you. I have been monitoring the conditions and the temp. has been between 75-80 degrees in the day, and the humidity has only been approx. 45-50%, which is not what I had hoped for. I was hoping for about 70% humidity.

I would appreciate any help from you as to how I can increase the humidity without causing the air inside the tank to be stagnant.

Thank you in advance,
Vicki