[lmgarret]

I am a first time orchid owner......I have lots of questions :-). I received two dendrobium orchids for Christmas this year and I'm a bit concerned about their health. On my largest orchid the leaves closest to the pot are turning yellow (3 leaves to be exact). I'm not sure if it's because of the lighting or my watering method. I do not think I have been watering the orchids enough in fear that I'll make them worse, but is it possible that not enough watering will make the leaves turn yellow? I have not repotted the plants since receiving them and they are contained in a pot with moss at the top. Should I repot with bark? Also, as far as lighting goes, my orchids are in my kitchen bay window which receives west and east sun.....so the orchids have morning direct light and then afternoon indirect light. Is the lighting too much? Any suggestions are very much appreciated! Thanks in advance!