Wine delight new growth with rotting roots

[silanah77]

Hello again, nice people! I have a problem again, so I need your help. It's about my two wine delight orchids that I'm afraid I'm going to loose. The smaller one on the last picture- I made a mistake and when the roots became long enough I didn't spray it first but soak it in water. Then it lost almost all the roots exept about 3 or 4. I stoped watering it, I spray it a little when it became too hot , because the older bulb is very shrivelled. I also put it over a container with water. I don't know if it will survive and how to make it grow more roots. So I need your advise on this. The bigger one-first three pictures - it was developing very nice, when it had nice roots I became to spray them, then increase water, because the temperatures here are above 25-30-35 degrees(C), but after I soak it in water today I saw that it had rotten roots-all three long rotted roots. So I carefully remove part of the moist sphagnum and added dry one. I don't know why has this happen-I thought when in full growth catasetums can't be overwatered...or? Also another thing-I saw a couple of days ago spider net arround the base, so I treated the orchids...I don't know if this can cause root rot. So what can I do? Obviously I make only mistakes...