Orchiata contradicting info??

[orchidsarefun]

I have phals outdoors right now, as long as temps aren't consistently below 55f. That includes seedlings and a species phal. Why do you use a heating mat ? I have a violacea indoors, at home temps. I used to use a heating mat for seedlings but stopped years ago - the downside wasn't worth it in terms of humidity and possibly cooking the plants.