4 ft x 3 ft x 16” cool growing terrarium in so cal, the impossible?

[itilien]

So I assume that you have some opening in the tank, because otherwise the humidity inside it will become very high and the water won't evaporate hence the temperature won't drop.

Did you have some problems with algae/slime over the wall? I suppose you did not try to grow orchids on the wall itself, as the wool is very thin.

At the moment I'm planing to make a small tank, probably something about 50x40x25 cm, in which I will use rockwool wall with thickness of about 3.5cm. I circulate constantly water through it and will try to grow pleurothallids in it. The tank will be closed and made from 4-5cm XPS foam, with front and top double/ tripple glass and I will cool the water with peltier.

The thing I don't like is that I cannot shape the wool in a way to look more natural, keeping a god waterflow through all of its volume. I suppose that if the wool is tilted, the surface layer won't have good waterflow.