How long have you had the new lights on? The trouble is there was no acclimation to the stronger light. Now all you can do is either raise them up, or some folks do the window screen method- go buy a roll of window screen from home depot, cut it in 3 or 4 sheets, put them over the tank between the water and the light, then remove one each week or so until you are at full strength. The damage has been done however, and You may just need to let it take it's course now. Even though you killed off a bunch of coralline, it will eventually grow back. The corals are another concern though.
How old is your tank? It might just be a bit too new and unstable for anemones at this point. Generally, I see anemones duck down in the rock work if there is too much light, not just sit there and bear it until they die.