Do standard room lights help if left on?

[RosieC]

I don't grow under lights as such, I try and make do with daylight on the windowsills. But at this time of year it's so dark and dingy every day I worry about my orchids, my greenhouse is still pretty bright with light from all sides, but the windowsill ones don't seem to get much.

So I'm just wondering if having the room lights on helps in any way, or is it the wrong sort of light. I mostly have compact florescent lights in the centre of each room. Mostly nowhere near the orchids, but the orchids are lit by them.

Anyone know if this helps even a little