Hoya imperialis Rauschii Seedling Flowers Again!

I have restarted Hoya imperialis so many times from cuttings over the years, and when grow in a tent under artificial light, it usually flowers for me within 18 months, or so. Here is another example of one flowering for the first time in January. It lives with other imperialises in the same 3X3 tent in one of our spare bedrooms.