Temperature for Species Phals and Paraphals

[SissyP50]

Hi all, I'm just wondering what temperatures people keep their species phalaenopsis orchids at. I had two phal bellinas growing in my house with a temperature range from 66-70'F during winter and 70-80+ in the summer. They did fine for a while but died due to nutrient deficiencies and stress. I'd love to try them again but I'm a little hesitant because I'm still figuring out my grow space, and I'm still hurting a little :'c.

I am also interested in paraphalaenopsis orchids and their culture, especially if they can grow in my temperature range. If anyone has any has experience growing them, all tips are greatly appreciated.

And yes, I have looked up many culture/care online, but I appreciate and rely on other's personal experiences.