I rescued some distressed (overwatered) orchids . i've had them about 10 days, and repotted all of them. i'm in north Alabama and growing them on a covered porch (that opaque plastic roof stuff) so they get filtered light all day. i did feed them the a couple days ago, and i think this was wrong, so won't do it again for a while. almost all of them had serious root rot, so i cut back the roots when i repotted. here are the pictures of my sickest ones. i let the vanda have about 1 hour of direct sun a day for about 3 days and think this is the problem. i've since moved it so it gets no direct sun. i have no clue what is wrong with the other ones. help!