Wilting Petals on Phalaenopsis Orchid Flowers

[Deena]

Thank you for your replies! I've dealt with a mealy bugs before and they are definitely not the cause of this. This plant has no visible infestation and both the base and the flowering stem has been sprayed with Bayer 3-in-1 to prevent mealies from using it as their food source.

I have updated the post with pictures of the flowers, and you can see a bit of the orchid in the background. I'll try posting more pictures of the orchid and the root system when I'm back home. Currently the orchid itself is doing fine, the leaves are healthy and plump, and it has an average level root system going from what I've checked it a month ago.

The first picture is showing what healthy flowers on this orchid are looking like. The next pictures show some of the wilt. So what's surprising me here is that only a few petals would wither away instead of the whole flower, this is happening to half the flowers on this orchid but not the other half, and that even if some petals would wither the flower itself doesn't wither completely and drop off, which is how it usually goes with Phals. This has been happening on this particular orchid and none of the others.

Any more tips on what's the cause of this problem would be greatly appreciated!
I'll add more pictures once I'm back home.