EpiWeb with Mold Problem & Question.....Ray?

[Becca]

Hi Everyone! I'm hoping those experienced with Epiweb or mold or fungal problems may be able to help me. I have a Cattleya growing on a huge slab of EpiWeb. It loves it! But about 6 or more months ago I started getting a white fuzzy mold growing on the surface of the mount next to the roots and on the roots. I have been using a Physan 20 spray over and over and I just can't seem to beat it! I know I have high humidity, and I have air circulation, but probably not enough. My one Coralife fan dedicated to this mount to help out with the issue decided to crap out on me. So the problem has gotten worse sense then and I don't want to keep putting money into fans that can't hold up to my conditions. So why isn't the Physan 20 doing it's job? What can I do? I have other orchids mounted on epiweb and other orchids mounted on other materials and I don't have any problems with them. Just this one! Sooo....can someone give me any idea's on what to do? I was hoping Ray might be able to help me since he has a lot of experience with the EpiWeb. Thanks in advance!