Mine's not so energetic as yours but is part of a natural ecosystem setup:
Mine is not chemically controlled, except for mosquitos rings. Mine doesn't have filters or pumps. It serves to provide a part of the wetland habitat I am providing in my NWF certified habitat. I really like yours, esthetically, however. It's really nice. How do you maintain yours over winter?
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Ross
http://orchids-ross.blogspot.com/
I don't do most Dendros or large, "floofy orchids". For me it's minis (like Angraecoides), Masdies, Paphs, and others that crept in somewhere along the line. See my orchid list for complete collection (usually not current.)