Cattleyas under lights?

[missann]

I just recently read that with certain species of cattleyas-the one mentioned is c. trianaei- that you can get them to bloom twice a year simply by adjusting the day length with artificial lights. It didn't mention skinneri though, and I have just divided my 'heiti jacobs' FCC clone and I wanted to do some experiments with it. Since it is a spring bloomer, I have a while until I get to see the show so I thought that with all my plant lights and having a space to do this, I might try it. I just don't know how long I should simulate winter for, and if it will even work on skinneri.

I have also read somewhere that some of the unifoliate cattleyas will not flower unless they have 8 hours of uninterrupted darkness.

I am just curious to know if anyone has done this, and, if you grow cattleyas under lights, what kind of schedule do you use to do it and how long of a rest period do you give them to simulate winter?

I have the following light duration schedule in a book that says (for general culture) nov.-jan. 16 hours/day;
feb-june 18 hrs/day
july-august-16 hrs/day
sept-oct. 12 hrs/day

Oh yeah, I have them in front of a window as well as under lights because the light from the window is not as bright as it needs to be.