Light requirements for species Phals .?

[NeoNJ]

Just checking in to see how everyone grows their species Phal's.....how bright ? or deep shade ?

I have a few mounted Phal species (fasciata, violacea, mannii) and they have leaves that are yellowing. I can only attribute this to light that is to bright (they are in a SE window with morning light) and may require deeper shade to prevent the yellowing ......

[orchidsarefun]

Mine are in a South and West facing window ( L-shaped ) and I have aluminet/shade net up on both windows.
I try to carefully follow the change in seasons in putting up shading - I only recently put up protection in the SF window. The only species that seemed to struggle in this lighting is sanderiana and I moved it into deeper shade. It seems to me that equestris, violacea, gigantea and tetraspis C1 love dappled sunlight if I compare how fast they grow to hieroglyphica for example.
BTW mine are all in sphagnum ( except equestris as its huge, pot is >6in ) and humidity is at least 50%, mostly higher.

I have mounted phals - mannii, parishii and lueddemanniana which are mostly west-facing and receive filtered afternoon shade. All currently have new leaf growth and had previously flowered, except mannii as its immature.

[naoki]

This link may help.

Cultivation of Palaenopsis

I grew them at 900fc (2-3" from 2-bulb T8) 15h/day. But I would like to get more light.