Switching from CFL to HPS during flowering.

I have been in flowering for about 6 weeks. I found a HPS I can use and was thinking about just switching from two 30K and two 50K CFLs (all 105W) on two plants to a 400W HPS. One is fairly close to finishing up and the other (sativa) has a while to go. Can I expect any problems in switching?

um... I believe there is a CHANCE of the plants being a lil shocked/stressed because of the light change.

But besides that chance, the girls will LOVE the light. Probably going to speed things up a bit too maybe finish a week or two earlier because of the better light. Dense`r nugs and less air-bud.

Worth the rish of a lil` stress mate