I bought two phalaenopsis plants at Home Depot five days ago. The petals on one of the plants began to curl inwards the day after I brought it home. Since bringing it home, one of the buds has opened up, but the petals look like they are starting to curl. The second plant looked fine until yesterday, when its petals also began to curl.
The leaves on both plants look a little bit dark, but they're getting lighter since I've brought them home.
My apartment is pretty dry, but I have them both on humidity trays and am spraying them several times a day with a spray bottle. The temperature during the day is around 80 degrees; at night, it is around 68 degrees. I have them both in indirect sunlight at windows.
I did some research, and thought that it might have had something to do with air conditioning blowing on the flowers. I've moved them out of direct range of the air flow, and the petals are continuing to curl.
Does anyone have any idea what could be causing the petals to curl and how I can stop it? I really appreciate any insights you might have.
Pictures are here.