In 2009 i bought a flask with five small seedlings of Ascocentrum christensoniana x Ascocentrum ampullaceum and this is the first one to flower.
I did thing it was strange that the buds where orange and are really disapointed with the results because orange/yellow flowers is not on top of my list.
I have been growing this one potted in bark.
Nearly all my seedlings and very young vandas are grown this way ,until they have developed a good rootsystem.
When potted i water them about every third day, grow them under a ledlightpanel, give them a slight brease and hold back with the fertilizer.