I think you should concentrate on getting your photos right with the regular lights on before trying an actinic shot. You will have a lot of trouble with balance and coloration with only the actinics on, take it slow and get your focus and composition down pat and then start to play with different lighting.
The blenny pic is the best. It would probably have been even better if you didn't have that soft coral on the left side in the field, the camera wouldn't have had to reach so much to handle all the depth.