Depending on what you keep of course.
I had mostly soft and not very light needy corals and they just fried. But if you had sps
or something that requires more light then you'll be fine. I ended up going down to like 10% power on both white and blues and slowly every few days upped it by like 5%. I am now back at 50% and the two or three corals I have left have adjusted. Just have to get whatever corals you have used to the new light slowly.