Nope, only used one light.
My winter experimental grow was a bit of a fail. Grew a white widow auto. Plant grew to about 60 cm but had extremely stunted growth (super cold winter I presume), leaf burn etc. I have not measured yet, but think I will get about 1 or 2 g lol. Currently still curing.
My second grow is looking much better. Planted a wild dwarf Auto. She is already taller than the first grow with some proper buds.
Will post some pics asap!