phal lighting

[sii]

To be honest I don't know if my phal is a hybrid. How would you know? What's the difference between a hybrid and a species?

Anyways, I'm struggling with trying to find out what the best lighting conditions are for my phals. I have them by a south facing window. They get bright morning light until about noon. When I touch the leaves they don't feel hot. The colour of the leaves is light green with the exception of one. I've been moving them around this year. I hope I found a good spot for them. I'm so confused.
I thought phals were easy to grow, but I'm finding out it's like trying to fit together a puzzle with so many pieces.