Hi Mark,
Thank you for compliment. :)
You can saw my winter growing on the photo in my topic (http://www.dalkan.cz...G_8278-copy.jpg). Southern windowsill, no additional extra lights (maybe a little bit from terrarium with the chameleons) Temperature and humidity you can see here http://www.dalkan.cz...2013-12-23.xlsx (every month has its own sheet). Soil mixture is peat:silica sand 1:2, in the pot is approx 1cm drainage and no water level through all winter time. Watering only from the top, just to make the soil wet. Maybe once every three or four days.
This winter will be different due to buying dehuminifier.
You can see this year´s seedling on previous photo too. They are not quite tall, but looks very healthy. I think that yours seedling are bigger than mine. ;)
Merry Christmas to all
Dalibor