Phragmipedium care differences between fischeri, andreettae and anguloi

[JonathanX]

Hi everyone, I have a couple of questions regarding the difference of care between phragmipedium fischeri, andreettae and anguloi. Last year I bought a phragmipedium fischeri flask, lost most of them, I currently have three small seedlings and one just had its crown rot, one I growing insanely tiny leaves and one is appears to be growing fine but it wasn’t a part of the flask(I bought it from the same seller but as a singular plant). At around the same time I also bought a phragmipedium andreettae flask which I lost half the seedlings so a smaller loss rate than fischeri. This year I bought a phragmipedium anguloi flask and they’re growing well and I haven’t lost any. I don’t know the care differences between those phragmipediums, what are the care differences? My current conditions are 19-30 degrees Celsius, 70-99% humidity and low airflow. I also have a schlimii var manzurii and I bought it as an advanced and established seedling and it’s growing well in my care.