I agree with snowflake - I've been watching my Zygo like a hawk and then suddenly one day there was this fat spike coming out, I couldn't believe I missed it.
Excellent job, so exciting! Looking forward to seeing your blooms. I must say I'm not so sure that some of my Zygo hybrids are all too fond of warmer temps, most likely though it is still an issue of air circulation...I will update under a diff thread.