I ran across this supplier while checking on other items (lights) Electric & Gas Heater Comparison Chart and Information Guide I'm not a greenhouse person, but maybe there's something here? I'm sure others will jump in as well cause we've had some lively discussions regarding venting vs not venting.
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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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