Ian,
Thanks for the honest crit.
I do have a external flash, but time and space today meant I didnt have it set up, and the 5d does not have flash onboard.
Today was a tester to see if the container and the liquid (cheap fizzy water at 10p from tesco) would work together.
I will get a chance to retry this soon and will post up better (I hope) images.
Paddy