I"m not familiar with Consan but if it is listed for use on roses it should be OK for orchids.

Does this link help?
http://www.windwardorchidsociety.org/downloads/files/Home-Made%20Orchid%20Remedies%20and%20Treatments.pdf

It is about natural remedies and talks about using cinnamon powder...

Here is a link that might be useful: Home-Made Orchid Remedies and Treatments

Why not use granulated pool chlorine. Only need a small amount and it can be put through the irrigation system or done with a watering can. fixes all fungal infections!

I've been using the amber colored Listerine on my orchids once a week. It works as well as Physan or other chemicals. (When I say "as well", that means I still get fungal spots but the stronger chemicals didn't help much either.)