There are a few images of my 20 gallon on my profile… in process of a 120 gallon build ☺️. You won’t actually need all very much DI water. I was only needing about a gallon a month. Much of the moister is providing by humidity that was scarcely below 95% and running a cheap ultrasonic fogger for an hour or two every other day. I only sprayed the plants without pseudobulbs ever other day with DI water. I used 1/4 to 1/2 strength dyna grow every two weeks. It depends on which species you pick. I’d avoid mixing different culture needs too much. Really think about where they’ll be in the space. Even in the small tanks there will be a temperature and moisture gradient vertically. Use it to your advantage.
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