This was set-up in a 16 x 8 inch glass tank, I used two tall straight clear classes to hold the pieces of lemon & lime in place. The bubbles came from two pumps with air stones fitted.
The lighting was a large softbox behind the tank, approx 30cm from the lemon, lime and bubbles. Going too close with the softbox will make the bubbles look too flat. Also I used two 7x5 inch reflectors made from a car heat shield thingy held in placed at 30 degree angles at the very front of the tank, either side of the camera