Hi all,
A part of my greenhouse is in the shade of my house. I this part of the greenhous I grow my Ariocarpus. They grow well, but make only few flowers. So I decided to install artificiall light. The part of the greenhouse is about 2.30x2.30m, the lamp is about 1m above the plants with a "wide angle reflector". The lamp work with a Philips 400 Watt SON-T Agro.
The artificial light is on from 7.00 AM to 6.00 PM, always when the natural light is less than 10'000 Lux. During wintertime I will stop the lamp.
(https://lh6.googleusercontent.com/-1W1EkbJOa4Y/UnZ_qjcNZhI/AAAAAAAAG3w/WO0T8SJ9eHI/s800/Foto%25202.JPG)
(https://lh6.googleusercontent.com/-gY5bKdMxhpA/UnZ_l2_cM3I/AAAAAAAAG3o/XEix13e_QGI/s800/Foto%25203.JPG)
Excellent solution, I hope to give you good results.
Sometimes I also use artificial light to flourish the Ario given that there are often many cloudy and rainy days during this period.