I went with 50/50 only. Adding actinics made the tank too blue for me, but that is a personal decision.
My bulbs are about 3 inches above the water. I lay them on the edge of my 55. With the caps on, they lay perfectly on my perfecto 55!
![Big Grin :D :D](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
They cannot fall in, but taking the top off (which is rare) can be exciting.