Hey Sand Tiger fear not. My main grow area is east south east losing sun at 2 ish in the afternoon. I have 2 and a half vandas/ ascos and some other vandaceous with a view very soon for renanthera and trichoglottis brachiata., the 'half' vanda is a crown rot victim mimi palmer but she bounced back after i lopped the top off. Many members here specialise and expose their unfortunate events,

My plants are pretty much hanging out the window they are to close to glass and my constant spraying does not conflict with them- now! anyway as the crowns are out of aim. Windowsill wise its not the sun so much as the humidity i relation to roots esp if u have a fan on the go alot , which i do cos of all mounts etc. This is why I underline Ameys point re a vase. Doesnt have to be a vase (far to normal for me) but this is a crucial tool or your roots will dehyddrate and dry up forever. I use cut suspended plastic strips as an immediate backdrop and hardly noticeable and does the job so well the phals longest aerial roots are gunning for it. I have to have roots dangling freely or atleast the illusion of, its part of my oh-naturel habitat aesthetic thing. You can pot up with selective media or just fill pot with water 30 mins and empty daily. Mine get dunked and sprayed. In slat baskets suspended on pot with Lampranthus in peat and roots hang down the sides.