Good Night To You,just read Your query re Your Vandas.I have presently a deep blue Vanda in flower.It has two flower spikes and then,I have another one which I only noticed Yesterday,has one spike developing. Mine are growing in large bark in see through/transparent, approx 8 inch pots. I will take pictures of them as soon as I can alter size in order to print them. Both mine are located in What I call the glass room.I turn on two small heaters at night but feel presently despite heating,the temperature is too low so I remove them each evening and place them in tv room, close to storage heater. In the morning, I return them to their spot where up ‘til now,they seem to be getting enough sunlight. So far so good, They seem to be responding well. Actually,I was inspecting them this afternoon and misted their aerial roots which became that lovely ‘alive’ green colour.