I am sooooooo jealous! Go away! Get off my turf! :twisted:
Kidding, this is exactly what I am going for. Right now I have half of this. When I determine how I am going to do my water section, this spring, I will hopefully have something close to this.
Ferns and mosses require constant moisture, humidity of 50+, well drained but daily moistened soil, slightly acidic soil, shade (More ambient light). My remedy was to make plexiglass cutouts, (Used for it's rigidness.), that resemble leaves from trees above. I sandblasted the plexiglass, so light still passes through, but is diffused enough to provide a slight shade. Arg... I need to get my camera back from my sister!
Some ferns also need a frozen dormant stage in order to continue existence. They will live without this frozen stage, but will eventually die off.
Mine get removed and stuck outside to freeze in the winter, heavily wrapped in white paper-towel. This saves them from freezer burn, and keeps temperature fluctuation down... a mini buffer. One month later you pull them in and replant, dead leaves and all. When new sprouts come up and have fully opened, trim the dead leaves.
As for the mosses, from reading, I have found that they are real specific when it comes to growing conditions. Any harsh changes in PH, water delivery, planting, etc... can kill them. The best luck I have had is by collecting only mosses that are sitting in direct sunlight from my yard. This means that they are light tolerant, chemically tolerant, (We water our lawn with tap water (Chlorinated). Our yard is mostly clay and sand with little actual soil, and is surrounded with pine trees.
You can make acid-soil by grabbing a hand-full of fresh pine needles, drying them out, and crumbling them into fine chunks, then just add to your soil mix. (Test your mixture to make sure you are not adding too much, try to match the soil that you found the moss in.)
You can make acid water with the same method, only soak the crumbled needles in un-chlorinated water for about three weeks. Mixing every few days. Add this concentrate to fresh water to get the correct PH... When you know the ratio, just mix that way again... it will be close enough to satisfy your plants that love acid. (Don't saturate with the acid water, only enough to moisten that exact plants leaves, and immediate root area. Otherwise you will constantly be battling water PH problems from seepage.)
Please post your pics also in my post of user pictures... I want a nice candy entrance for this place. Your tank is like crack candy, total inspiration.