Naked dendrobium

[gngrhill]

I got a Den. aberrans hybrid a few months ago and 1 by 1 the leaves have turned yellow and dropped off. The roots seem to be ok, so, I guess my question is : is that normal. I didn't think it was one that took a winter rest. I understood it to be a Latoura which are easy to grow.
T-5 lights 10 hrs/day. Temps 55 F nights ,65 to 70 F days. Humidity 50 to 70 %. watered and fertilized when due. Any advice or comments appreciated.