I have one problem - my few plants started to dry out:
and even sandersonii
I thought (in case of nephrophylla) that there can be too much light - it quite close to lamp, but not in case of others
They always are in water, so it not common drying.
Another reason - we have hot weather now - maybe it's cause?
Or is it attack of some mould?
Will be very thankful for all answers or tips.
P.S. And one question more
How often do you recommend me to water alpina if moss, in which it grows, doesn't become dry? It grows in closed box.