Here's the setup
The shot was taken in my bathroom as water is easily available. An old aquarium was used. 1x 580 EX II bare flash @ 1/4 power on the left at the aquarium. eBay remote trigger was used.
I have used the back of my diffuser (the black side) as background as it's resistant to water when it spilled. And finally a diffuser on the right.
The fruits were dropped on the middle slightly to the right. Reason being is because diffuse light is not as powerful as straight flash (left). So the left side is pretty much lighted, only the right side which need some attention.
And the result is at my previous post :) Hopefully this is useful for all.