Hoya fitchii was rooted directly in, and grown in a very chunky mix containing large bark, charcoal, and perlite chunks mixed with a little peat-based potting soil.  It grew and flowered completely under LED and T-5 lights in a humid grow-tent.  I watered the plant about ever 7-10 days, and it took about 16 months from cutting to flower.  Here is a photo of the entire plant: