I've Killed...many. Can't say how many. I am getting much better though. When I first started postin gon OB, I was a one out of every 2 type orchid-assasin. Now, I am a one in 10. My problem is that orchids tend to look happy, even when they have no roots. I have solved the problem with my Oncidiums. As ungainly as it sounds, I mount oncidiums and water daily. Mounting, and also semi Hydo in lecca or lava rock has saved more orchids than I can think of.