Wow, nice series! What kind of strobe setup are you using? Your pics show good light and color balance! Very impressive resolution for the G16.
There is no strobe involved. I have a Fantasea G16 <<<(Click on link)and I only use the flash diffuser plate with the camera flash that comes with the housing. I adjust my flash intensity according to depth and light. The Fantasea flash diffuser plate eliminates any hotspots if the flash intensity is adjusted correctly. Oh, one other adjustment to the G16 is using the underwater mode for shooting.
If you like the pics, check out some of the Reef and Pelagic Videos. This link is to my Flickr page. There is also a video legend created to tell you of each one.