The terrarium is big -- 36"h x 36"w x 18"d. I was planning on maintaining 2.5" of water in the bottom for humidity. 1.5" of additional leca sits on that, but not submerged in water. A mesh barrier on top of that. And then about 2" of organic mix on top of that.
The organic layer is where I would plant some terrestrial plants, but most of my orchids with be mounted on cork and branches.
I don't intend to let anything grow down into the leca. The wet leca is for humidity. The extra 1.5" of leca above that is so that the organic layer isn't sitting directly on top of the wet leca. It's intended to keep the organic layer from being sodden all the time.
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Hybrid Mode
