Thanks for the compliment on my video, so good you thought it was a fish tank -- NO -- you saw the rare video of a real red carpet anemone IN THE WILD.
https://youtu.be/gT2jeGcjPkU Videoed with underwater tripod for stability looks like a fisk tank, Huh?
The original has more than 60,000 views and shows me videoing the rare creature (see link above)
I understand the shifting light and usually have to cut up clips to white balance individually. I like PowerDirector better than GoPro software, easier to use and more features and much faster, 64 bit. Plus multiople plugins like SonicFire.
I prefer Photographic Glass Filters over Plastic. Use SRP when possible on old Hero.