There is a flat sheet of acrylic on top. The fan at right is "blowing the heat away" so-to-speak. It helps to disapate the heat that would normally radiate down into the aquarium. So far, so good.
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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.)
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