Rotting Puesdobulbs and new growth

[GinaStarSeed]

So I have had about 30 orchids in SH for 1.5 months. Quite a few had nice new growth but now it rotted off at the base of the new growth and the other uesdobulbs are going smooshy and rotting. Happened on multiple plants. What am I doing wrong?

[estación seca]

Hi GinaStarSeed, I can imagine how unpleasant that is. This isn't something that happens often. What are your growing conditions? Temperature? Humidity? Light? What kinds of containers and media are you using for S/H? How often are you watering? What kinds of plants are they?

[Orchid Whisperer]

Information about the type of orchid, and photos, would be helpful.

[GinaStarSeed]

Hi. I live in North Carolina and the orchids are outside right now. Daytime temperatures around 80 to 85 and nighttime temperatures around 60 to 65. We have pretty high humidity here and it's been raining For a few days. Our use plastic net pots that are open on the sides with expanded Clay media and then each net pot is sitting in a basin and the water level is probably about 3/4 of an inch deep and a basin is about an inch wider than the pot on all sides. So if the pot is a 5 inch pot the basin is about 6 inches in diameter. I will fill the basin and then whenever the dries out I've been letting it stay dry for 24 hours or so and then I really water through the media and for the basin again to about 3/4 of an inch. 24 hours or so and then I really water through the media and thought a basin again to about 3/4 of an inch. It's happened on a couple different orchids and unfortunately I'm not exactly sure what types each of them were. The one that just lost the new growth and had all it's puesdobulbs, I think was an oncidium or some type of orchid that looks similar.

---------- Post added at 12:23 PM ---------- Previous post was at 12:22 PM ----------

Oh also the top of the Clay aggregate had a very thin layer of Spagnum Moss to retain some moisture on the top

[Orchid Whisperer]

What kind of orchids are they?

If Cattleya alliance, for example, the way you are growing them would quickly kill most Cattleyas, which require drying in between watering.

Pictures of the rotting plants would be helpful.

[Dollythehun]

Do you mean Oncidium?

[GinaStarSeed]

I am letting them dry 24-48 hours between watering.

Yes I meant oncidium or a similar looking orchid.